Letters
Transcript of Letters
Newscripts by Κ. Μ. Reese
Biology called "sexist"
Dolores E. Keller of Pace College, New York, N.Y., has advanced the thesis that, "Biology is a sexist discipline" (1). The thrust of her argument will be evident in a brief excerpt: "Even the bacteria reinforce male supremacy concepts: male Escherichia coli harbor the sex factor and therefore are F+; females lack this factor and so are F - .. what justification do we have for assigning gender to organisms when there is no genetic basis for sex? Why must passive, recipient, negative cells be female? Why must active, donor, positive cells be male? Surely the perpetuation of stereotyped gender roles and their transformation into biological terminology is inaccurate, unscientific, and sexist."
Sounds reasonable. At any rate, this department did a quick mental survey of chemistry and found no obvious sexist nomenclature. Chemical engineering seems relatively clean, too. The engi-
Letters War research
SIRS: Since the end of World War I, I've seen many groups led down the Utopian road we all wish for—no need for war.
For any group to advocate any policy of refusal to help defend his country is of itself as untenable as a policy of planned suicide would be.
Although it is wrong to commit murder, it is not wrong to defend or stand up for what is good. Sins of omission are just as bad as sins of commission. The policy of not preparing to or trying to protect what is good is the same as killing it. Refusal to do war research is murder.
Furthermore, ACS has no right or occasion for advocating any such policy as influencing people to not defend our country. Refusal to do war research is for a chemist just the same as for an infantryman to refuse to use a gun.
We are trained to use our knowledge for good, and defending one's country is good and never gets out of style.
R. Bradt Warsaw, Ind.
SIRS: The letter (C&EN, June 19, page 44) concerning a proposed amendment to the Society's Bylaws relative to war research indicates a lack of knowledge of economic facts and of the functions of government and the responsibilities of its citizens.
The average graduate in chemistry is not prepared for work in a specific field although he may be interested in one or more. He therefore accepts employment that is available and learns whether or not such employment has a continuing interest. Unless financially capable he has little opportunity to choose a field.
War is not a desired state among moral nations or people. It is the natural result of the inability of our Government to establish
neers deal on occasion with male and female couplings, but one suspects that they borrowed the expressions from the plumbers.
(1) Keller, D. E., "Cell Chauvinism," BioScience, 22,397(1972).
Jane Austen's hair probed
A much-needed gap, as a phrase maker once put it, has been filled by J. A. Swift of Unilever Research, who has studied Jane Austen's hair with a scanning electron microscope. Dr. Swift and Dr. A. C. Brown did the work at Unilever's Isleworth Laboratory in Middlesex, England. The project came about in this manner:
Novelist Austen (1775-1817) bequeathed a lock of her hair to her niece, Fanny Knight. In 1949 the Jane Austen Society acquired the hair, which was mounted between two glass disks in a gilt frame, and since then has exhibited it in the museum at Chawton in Hampshire. The society grew concerned recently that the hair had deteriorated to a degree and asked Dr. Swift to examine
by diplomatic means the protection and peaceable living of our citizens. When our Government in due process decides war is necessary it is the duty of each citizen to support that decision by service whether military, production, research, or financial.
The proposed amendment is not in the best interests of the Society or of the United States, and should not be adopted.
Harry D. Darlington Lakeview, Ark.
SIRS: Since I cannot possibly keep up with every action or proposed action of the ACS Council who are in theory my representatives, I must express my gratitude to Jan S. Krouwer et al. for writing to you to ask that all members support the proposed amendment to the Society's Bylaws which would discourage members from working in war research.
I am unequivocally opposed to any such amendment and feel that anyone who would propose and support such an amendment is misguided if not downright traitorous.
As much as I dislike war and all its destruction I still must be realistic enough to realize that it is essential that many of our scientists must continue war research in order that our nation remain strong enough to discourage foreign aggression.
Since most scientists are also realists it seems to me that it is probable that most members of ACS feel as I do that it is not the business of the Society to go on record for or against war-related research, but more a matter for the individual member to search his own conscience and proceed accordingly.
Hance H. Hamilton Dallas, Tex.
SIRS: This letter does not concern itself with the morality or immorality of war-related research. Its main concern is the tendency of today's Left to push very hard for the politicalization of all groups and societies. Jan S. Krouwer, with three cosigners, urges the Society to adopt an amendment opposing war-related research. He cor-
it. He did so, using only a few fibers in order to preserve most of the lock of hair intact.
His results indicate that Miss Austen did not brush or comb her hair very much in her last three years. Dr. Swift notes the writer's niece Caroline's remark that, "She always wore a cap— such was the custom of ladies who were not quite young—at least of a morning but I never saw her without one." The cap, he speculates, might be consistent with the habits of a person little concerned with the outward appearance of her hair.
Dr. Swift also found microorganisms on the hair. He believes, in fact, that Miss Austen's hair provided the first example of direct association between Malassesia furfur and the Pityrosporum genus. (It had been suggested earlier that Malassesia furfur is an evasive mycelial form of yeasts of the Pityrosporum genus, and particularly of Pityrosporum orbiculare.)
(1) Swift, J. Α., "Scanning Electron Microscope Study of Jane Austen's Hair," Nature, 238, 161 (1972).
rectly observes that although science may be neutral, scientists can be political. While, however, there are ample opportunities under our present form of government for the politically likeminded scientists to form or join any political organizations they may desire, a drive is on to deny to those whose reason for joining a society is other than political the opportunity of belonging to a nonpolitical society. Depriving those who wish to join a professional, athletic, or other group, from doing so unless they endorse a given political stand, is depriving them of a basic freedom. It also evokes memories of another era and another movement.
Those scientists who believe that a boycott of war-related research in the U.S. will help the cause of peace are undoubtedly as sincere and well meaning as those who firmly believe that the first condition to world peace is to keep this country at least on par with other military powers (whose actions our peace movement can, unfortunately, not influence). While providing an opportunity for a dialogue between these two factions, it is not the role or purpose of this Society to urge or pressure any of its members to abandon their position for one they consider morally and politically unsound.
Walter Vink Purdy's Station, Ν. Υ.
SIRS: I simply cannot let the letter from Krouwer et al. go unchallenged. I have been privileged to be associated with a part of our national defense effort for 16 years. I have seen many of the inventions and innovations made for weapon applications used successfully for completely peaceful purposes. The maintenance of a good defense system is essential for the freedom currently experienced in this country by individuals and organizations alike. We can be independent and follow our own desires only so long as we can prevent others from imposing their desires on us. Certainly this must be evident to Krouwer et al. Since
Continued on page 42
52 C&EN August 14, 1972
If you need oxidation protection in high-temperature (300OF-500OF) processing or applications, our six new antioxidants should interest you. For full information, tear out this page, attach your letterhead or business card, and mail in. For more routine applications we produce a full line of antioxidants, including some which meet FDA requirements. Maybe we can help you solve a formulating problem? Write: Chemical Products Division, P.O. Box 2219, Columbus, Ohio 43126.
SEND US THIS RAGE TO TAKE
THE HEAT O F YOUR ANTIOX
IDANT PROB1EMS.
Ashland Chemical Company OM8ION OF ASHLANO OIL. INC.
CIRCLE 14 ON READER SERVICE CARD
42 C&EN August 14, 1972
LETTERS Continued from page 52
allowing our country to become weaker than our competitors would assure the loss of our ability to choose our own course, I can only hope that the proposed amendment touted by Krouwer et al. is a bad joke and will be treated as such by the ACS Council. An adequate defense must stand first on the nation's list of priorities, so that the other items on the list will have a chance of receiving attention. We really need to have our best minds focused on the maintenance of our country's defenses. It is certainly a worthy cause that a chemist may be proud to serve.
Mina L. Carnicom Sandia Laboratories, Albuquerque, N.M.
SIRS: In the C&EN of June 19, appeared a letter by Jan S. Krouwer et al. in which the undersigned urged the enactment of an amendment to the Society's Bylaws discouraging members from working on research related to war. Until Mr. Krouwer can persuade the chemical societies of Red China, Russia, and all their satellites to ask their members to refrain f rom such research he has no business to ask ACS for the enactment of this amendment. I remember too well the state of affairs before World War I I ; Japan, Hitler and their allies were arming to the teeth, while the western democracies sat on their hands. The outcome was a disastrous war and extermination of millions of people. If Mr. Krouwer and his friends want to work for peace, let them make sure that the U.S. and its allies are so strong and so well armed that they can keep the Red menace at bay without having to fire any shots.
Harry Jacin Norwalk, Conn.
SIR: I am appalled that the ACS Council is seriously considering an amendment to the Bylaws discouraging its members from engaging in military research. Six millennia of human experience have shown that those who will not prepare for war have nevertheless to engage in it eventually because there is no method of preventing power-seekers from taking advantage of their un-preparedness. They must then fight with inadequate weapons against better armed adversaries and, should they be successful, the war will be longer and bloodier than it need have been. The pacif ism that followed World War I thus caused millions of unnecessary deaths in World War I I .
ACS should be no part of any effort to precipitate this once again. Although it lies with the conscience of any chemist to refuse to apply his professional skills to any cause of which he disapproves, it is not for ACS to insult those of its members who work in prudent preparation for an unpleasant eventuality.
S. J . Hawkes Associate Professor, Department of Chem
istry, Oregon State University, Corvallis
SIR: Re the letter of Krouwer et al.: I do not believe that it is within the province of the Society to presume to direct its members into paths deemed politically desirable by certain people, who may not represent the views of the membership.
The suggestion itself resembles recent advocacy of draft-dodging or desert ion, and is thoroughly distasteful to me personally. The function of a state is to survive, and to be able to enforce its own self-interest in
GUEST COMMENT Continued from page 3
man to succeed. It is not until a man can spend the time caring for children as a prerequisite to success that he "must" now spend climbing an additional rung in his professional ladder, that he will feel comfortable taking a year off to spend with his children.
When a man's reality encompasses caring for a child, he will start rewarding success in that area the way he now rewards success at a profession. He will start investigating the myth that responsible child care centers hurt children because it will now mean enough to him to investigate the myth. He will start enlarging his image of women as people who can work with him intellectually and enlarging his image of himself as someone who can work with women and children humanly. He can do this only if he is secure enough in himself to take advantage of the reality that society's freedom of choice is only meaningful to those who make use of it.
Warren T. Farrell Rutgers University, Newark, N.J.
At 3 t per lb. American Gilsonite could really cut resin costs! Imagine what it could do for profits.
Write for FREE sample of this low cost resin.
American Gilsonite is an Exclusive Product of:
A M E R I C A N GILSOIMITE C O M P A N Y
1150 Kennecott Building Salt Lake City, Utah 84111 (801)328-0311
CIRCLE 1 ON READER SERVICE CARD
Ashland
the face of competition; as citizens we owe our assistance to these ends.
Perhaps we should wait for the Soviet Academy of Sciences to suggest a similar policy; or observe whether any Russian chemist who makes such a proposal can long escape his friendly local mental institution.
Morality, without the means to protect itself, is martyrdom. Let the writers of the subject letter select their own destinies, not mine. I believe that it was Napoleon who said, "The Lord fights on the side with the heaviest artillery." As victors we may have the privilege of indulging in debates about morality; as vanquished, we may not even be allowed the luxury of our own private thoughts.
Robert S. Rabinowitz Norwich Pharmacal Co., Norwich, N.Y.
SIR: I would like to express my sympathy for the letter of readers Krouwer, Lowe, Tritton, and Verbrugge urging ACS to discourage all research pertaining to war or destructive ends. A particularly deplorable example of such research is that under way at the University of North Carolina (Science Concentrates, C&EN, June 26, page 10) on the use of prostaglandins to induce human abortions. Chemical warfare against unborn children should not be promoted by any chemist or any university.
Thomas A. Schenach San Pablo, Calif.
New criteria for Ph.D. degree SIR: In all the discussions about the unemployment plight of Ph.D.'s, there is a solution I haven't seen, namely that we stop issuing the degree immediately after the individual leaves graduate school. Instead, the person will leave graduate school whenever he/she feels ready to prove his/her worth in the outside world, doing whatever society deems important, and therefore society is willing to fund.
Faculty members at graduate schools will then set up criteria for recognition of merit, and after a previously agreed number of years of experience plus demonstrated originality and creativity in his/her chosen field, then the person will apply for the Ph.D. degree.
One benefit to our colleges and universities will be enormous savings, and since the incentive of the sheepskin is not there, we will rid our institutions of higher learning of those that are there for reasons other than creative scholarship. The only persons attending graduate school will be those willing to learn.
Perhaps it might not be a bad idea to set the same system at the bachelor's level. Is there an institution bold enough to try it?
Joe Vikin Associate Professor, Corning Community
College, Corning, Ν. Υ.
Against unionization SIR: William A. Snell picked a most irrelevant example in his plea for unionization when he cited the financial gains for its members exacted by the Air Line Pilots Association (C&EN, July 10, page 37). The pilots are a limited group, and although all respect their technical competence, they have tight control over a small number of key jobs—jobs which in many aspects literally deal with life and death. They have used the leverage of their key position to
the limit with respect to obtaining pay raises and fringe benefits. • ACS members as a whole are not in an analogous position. They represent a wide range of skills and specialties. Unionization, which Snell hopes will give muscle to chemists in confronting "steely-eyed corporation executives," will in the long run fail to improve the lot of chemists. By putting an artificial price on their services, or by "steely" behavior toward the people furnishing the jobs, they may find that they have reduced job opportunities rather than increased them. It's happened to other segments of the work force.
I don't see much substance in the stress on "professionalism." Most of us work, or have worked, for employers. Only the few who have consulting services really can be called professionals in an economic sense, according to my definition. The most concrete aim of this movement, and one which I approve, is pension portability.
Donald F. Chichester Gainesville, Fla.
Let's define "professionalism" SIR: The arguments advanced for an increase in membership dues (C&EN, June 26, page 19), and in particular the statement that, "It is very clear.. . that the members would like an increase in activity in the fields of professional relations," etc. prompt a number of questions:
First, just what is meant by "professionalism"? This has never authoritatively been defined by any responsible body in the Society.
Second, to which members is this "very clear"? In the last election the vast majority of the membership did not bother to vote, so we do not know how they feel. Of those who did vote, 52% did not go along with the program being currently pushed.
A little later we learn, according to the arguments, that "it is imperative that such funds become available in substantial quantities as soon as possible." Who, other than the few individuals promoting this increase, have confirmed this need? What grave crisis, if any, faces the Society that makes this "imperative"?
Finally, just how much is considered "substantial"? In the "explanation" it is stated that "the Society spends approximately $5.00 of each member's dues at the present time for professional relations, public affairs, and public relations." That, bear in mind, is one fifth of our dues. Do we want to increase that percentage from 20% to 43%?
To the argument that this "is much less than many other professional societies spend on such activities," perhaps the distinction should be drawn that ACS is a scientific society, not a professional society (such as ΑΜΑ). It is almost certain that the other scientific and technical societies (physics, life sciences engineering) do not spend any such proportion of their membership funds pushing "professionalism."
The rhetoric about "self-enlightened investment" and saving society can be discounted, but what should not be forgotten is that the responsibility of ACS is primarily to its members—ALL of them.
Robert Matteson Alamo, Calif.
SIR: Despite much discussion in ACS on professionalism, there is a lot of uncertainty and disagreement as to what ACS can or should do in this direction. A frequent com
ment is that ACS can do much more in professionalism without changing its present tax status. But can ACS do enough in professional matters to have a real impact? Can any organization based on a single discipline hope to be effective in a multidis-ciplinary milieu? What about members who oppose or are indifferent to professional activity? Would a professionalized ACS really be the best of all possible possibilities, or can one conceive of other organizations that could more effectively promote chemists' interests in professional matters?
The latter approach is supported by several candidates for Director, Region 6; the views of one are (excerpt):
Although the Society can set standards for employment and discharge of chemists and chemical engineers, it can use little but moral suasion and publicity to enforce these standards. Further, in negotiating for treatment of technical employees in general, it is neither practical nor desirable for employers to give distinctive treatments to chemists and chemical engineers, as shown by the handling of our portable pension plan. I propose therefore that the ACS Council and Board of Directors request the Executive Director to initiate negotiations with other scientific and engineering societies to set up a new multidisciplinary organization to represent scientists and engineers in negotiations with industry, in lobbying to promote desirable legislation (e.g., portable pensions, government support of science), and in acting as legal bargaining agent when such is desirable. The Society cannot now legally fill the last two roles. Even if it could, it is probably not strong enough alone to be very effective. Further, a large fraction of its present membership has either no use for, or definite opposition to, the Society's performing such functions. Although the concept of a pan-profession
professionalism organization isn't new, it hasn't yet received the consideration it deserves among ACS members. It is hoped that this will stimulate a wider consideration of various approaches to professionalism.
Donald B. Miller Councilor, Santa Clara Valley Section,
Menlo Park, Calif.
"Bureaucratic camel" SIR: The pull-back by EPA on nitrogen dioxide emission controls (C&EN, June 26, page 18) because of errors in the Jacobs-Hochheiser method is a perfect example of what happens when the bureaucratic camel gets his nose under the scientific tent. The technical shortcomings of the J-H method have long been recognized and these should have outweighed the superficial advantages of convenience plus the large amount of NASN (National Air Surveillance Network) data. Apparently, the 1970 Clean Air Act's rigid timetables forced EPA last year to value expediency over chemistry, and now the scientific facts of life are rearing their ugly heads.
The moratorium on state implementation plans for controlling NO2 emissions from stationary sources obviously raises questions about the federal stance on controlling these emissions from mobile sources. If the air in much of the U.S. really bears less N02 than was previously believed (or at least there are fewer Priority I regions) surely the public can be relieved of some of the costs that catalytic mufflers entail in so many ways.
Also called into question is the true state
August 14, 1972 C&EN 43
DIRECTORY SECTION
This section includes: CHEMICALS EXCHANGE—Chemicals, Resins, Gums, Oils, Waxes, Pigments, etc.: EQUIPMENT MART —New and Used Equipment, Instruments; Facilities for Plant and Laboratory; TECHNICAL SERVICES—Consultants : Engineering, Testing, Professional Services.
CHEMICALS EXCHANGE
EQUIPMENT MART
• ROBINETTE • RESEARCH LABORATORIES, INC.
Industrial Research · Consultation Technical Surveys · Product Development
Textile, Ion Exchange Technology Chemical Market Research
Btrwyn, Pa. Niagara 4-0601 Area Code 215 Member, Amer. Council Ind. Labs., Inc.
SCHWARZKOPF MICROANALYTICAL LABORATORY 56-19 37th Ave., Woodside, N.Y. 11377
Telephone: Code: 212, HAvemeyer 9-6248, 9-6223 ELEMENTAL ANALYSES
ORGANICS, INORGANICS, ORGANO METALLICS METALS BY ATOMIC ABSORPTION
MOLECULAR WEIGHT, FUNCTIONAL GROUP Trace Analyses Research
Routine analyses within 5 days
Founded 1950
ORGANIC MICROANALYSES GALBRAITH LABORATORIES, INC. P.O. Box 4187 Knoxville, Tenn. 37921
H. W. GALBRAITH Ph .D .
YOUR ANNOUNCEMENT in Directory Section can carry YOUR MESSAGE to the readers of the leading publication in the chemical process industries.
CHEMICAL & ENGINEERING NEWS
Advertising Office: 142 East Ave. Norwalk, Conn. 06851
of measurement technology with respect to NO2. A very considerable amount of research is still in progress on the efficiency of the J-H procedure; publications should soon begin to appear. There is indeed a lively question about whether the 0.35 factor uniformly applies to concentrations above 130 Mg/m3. Furthermore, there is still no firm correlation between the "Federal Register J-H method" and the substantively different version that was used in the famous "Chattanooga Study." That study, it will be recalled, is the chief link between ambient concentrations and health effects.
Overlooked in this whole picture is the Griess-Saltzman colorimetric procedure, one version of which is ASTM Standard Method D 1607. Fortunately, this method has been subjected to extensive on-site interlaboratory testing in the ASTM D-22 Project Threshold. More than 700 data points were taken over a range of 5 to 400 μg/m3 to characterize the method's accuracy and precision. The statistical data are now being worked up and a report will soon be issued. This is the only N02 analysis method that has been validated by direct experimentation and for this reason is a benchmark for judging the efficiency and reliability of other methods or instruments.
With so much emphasis being placed by EPA on the application of available proved control technology, the agency would surely be remiss if it did not avail itself of proved measurement technology too.
Perhaps the one-year moratorium will be used to clear up some of these questions rather than to pile up another set of numbers based on some quick fix of the discredited Jacobs-Hochheiser procedure. There is too much at stake—in dollars and credibility—to let "legislative mandates" override scientific judgment.
Walter V. Cropper Director, ASTM D-22 Project Threshold,
Philadelphia, Pa.
Carbonium ion nomenclature SIR: Although the use of this forum to express technical comments may be unusual it is the quickest way I know of to protest against the development of a new nomenclature for carbonium ions which seems to be taking hold both in the technical journals and in some industrial advertisements. I refer to the use of "carbenium ion" for "carbonium ion" suggested by Olah [J. Amer. Chem. Soc, 94, 808 (1972)]. Although many of the suggestions made by Olah in his paper are very attractive, I prefer to remain a "wooden soldier of the status quo" when it comes to the term "carbonium ion." I would be willing to change if the old term resulted in an inconsistent or unwieldy nomenclature, but I do not believe this is so. The brief table given below indicating the relationship among the names of several cations illustrates my point.
In each case in the table the cation is obtained by adding a proton or other positive radical to the parent system. The name is then changed by dropping any unnecessary suffix and adding "onium." It has been suggested that the suffix "onium" is re-
Parent System Trimethylam/ne (CH3)3N Dimethylox/de (CH3)20 Dimethylsulf/cte (CH3)2S Dimethylsulfox/c/e (CH3)2SO Methylbrom/cte CH3Br Dimethylcarbene (CH3)2C Methane CH4
served for the highest valence state of an atom. However, this has not been true as indicated by entries 3 and 4 in the table. In short, the currently used term "carbonium ion" follows a consistent pattern, is not unwieldy, and I see no reason to change it. In addition it seems to me the current system has the advantage of enabling us to name a carbonium ion according to the parent system from which it is derived without knowing the details of its electronic structure. We intend to give a fuller discussion of our reasons and some apparent exceptions in a paper to be submitted to JACS.
Donald G. Farnum Professor of Chemistry, Michigan State
University, Lansing
More room for people SIR: In C&EN for July 10 (page 38), Dr. Philip W. Zimmerman wonders what type of country we will have if the population is ever reduced to a tenth of its present size. The answer is, a very pleasant one. A large proportion of the ills of today result either from the demands of our present population on our resources or from the lack of satisfying work for all our people. With a population of 20 or 25 million, we could live comfortably with our land and our fellow creatures, instead of having to mistreat them brutally just to keep ourselves going.
Dr. Zimmerman's picture of an immediate slaughter leaving 90% of our homes and buildings empty is of course a malign fantasy. No one is proposing that. But seven generations with an average of 1.5 children per parental couple instead of the 2.1 needed for a constant population would bring us down to 1/10 of the present figure; and in the 200 years which that would require, there would be plenty of time to reorganize all aspects of our way of living. I agree that this is not probable—worse luck—but I deny that it is unthinkable.
Gordon G. Evans, Ph.D. Bedford, Mass.
SIR: As a member of ZPG (Zero Population Growth) and a food chemist, I would like to reply to the letter of P. W. Zimmerman (C&EN, July 10, page 38).
Of course we do not advocate any such decimation of the population as he has implied. What we do advocate is that this and every other country look at the consequences of overpopulation and consider the alternatives, in order to develop a rational population policy while we still can.
We believe that we are using up our natural resources at a rate that cannot be sustained for much longer, as described in "The Limits to Growth." Our efforts are directed at achieving viable population and resource policies before we reach the point in time that we no longer can control our own destinies.
I do not know anyone in ZPG who advocates such irrational population policies as Mr. Zimmerman describes. I hope that we can work out the solutions to this problem while there is still time.
Joseph Cohen U.S. Army, Natick Laboratories, Natick,
Mass.
Cation Tetramethylammon/iv/77 (CH3)4N + Trimethyloxo/7/'i//77 (CH3)30+ Tri methyl su If on ium (CH3)3S+ Tri methyl su If oxonium (CH3)3SO+ Dimethylbromon/i/m (CH3)2Br+ Tri methyl caroonium (CH3)3C+ Methon/i/m CH5 +
44 C&EN August 14, 1972
priced at far less than reproduction cosll Ideal For cliemicals, gases, pneumatic use, hydraulics and liquids· HIGH PRESSURE TANKS, 500 PSI Q/S pipe threads each end) G — 1 W — 12" χ 24"—has standup base
for easy filling. $30.50 G—1 12"χ 24"—2000 cu. in. less base. $27.50 D—.2 6"x 24" Magnetic Type Stainless. $8.95 Many sizes in stock up to 3900 psi—write. Send Purchase Order. Terms 2% 10 days, 30 days net.
A. C. TANK CO., Dept. Z872, P.O. Box A2 53105 BURLINGTON, WIS. Phone 414-763-328
TECHNICAL SERVICES
p-CHLOROPROPIOPHENONE