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N u m b e r 13 in Advances in Chemistry Series

edited by staff of Industrial and Engineering

Chemistry

PESTICIDES IN TROPICAL AGRICULTURE 13 papers—102 pages—discussing th« use of pesticides in tropical agriculture—on basic food crops, sugar cane, cotton, cacao, rubber, coffee, rice, bananas; in weed control; on stored products.

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order from: Special Pub l i ca t ions D e p t . Amer ican Chemica l Soc ie ty

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LITERATURE

At left, J. W. Perry of Western Reserve turns toward WR's Searching Selector

Search Selector Makes Debut W E S T E R N RESERVE'S SEARCHING SE-

lector got its first public showing in Cleveland at a Symposium on Systems for Information Retrieval during April. It was built by WRU's Center for Docu­mentation and Communication Re­search, headed by J. Whitney Perry.

The system is based on a code dic­tionary, soon to be out in book form, containing some 8000 terms from sci­ence and technology. CDCR believes about 30,000 terms could cover most technology.

In brief, technical articles are coded as telegraphic abstracts and put on punched tape; this amounts to making up a very detailed subject index. Cod­ing terms are on punched cards, so edited abstracts can be coded semi-automatically. Then, suppose some­one wants to see what's been published on residual hydrogen dissolved in un­alloyed titanium ingots made from sponge titanium. He codes the ques­tion and programs the selector by wir­ing its plugboard. The machine searches its tape and a Flexowriter types out serial numbers of all pertinent coded abstracts.

The Searching Selector is slow (one abstract per minute, although it can handle 10 questions at a t ime), but Perry says enough electronics know-how is available to speed it up by at least 104. Data on the punched tape could be readily transferred to mag­netic tape.

CDCR is doing a five-year pilot study for the American Society for Metals, will encode abstracts from some 25,000

metallurgical papers. Abstracts will come from Chemical Abstracts, Metal­lurgical Abstracts, and Journal of the Iron and Steel Institute. I n practice, says Perry, coding would start with trie complete article. Encoders could then prepare conventional abstracts, sub­ject index entries, and the like, as well as encoded abstracts, all in one set of operations.

Happy Revision Whenever a publisher announces a

new edition of a familiar and favorite work as being "completely revised a n d enlarged," this reader, like most others, approaches the newcomer as if i t were a stranger. Usually that approach is justified, for the reviser and enlarge r often drops or submerges-in Ms crea­tive zeal—some part or parts that h a d proved particularly valuable or whose familiar form made them easy t o use . Often much time and a certain amount of study and practice are required t o make the improved material as easily accessible as it was in the unimproved predecessor. The likelihood that r e ­visions may thus turn out to b e less than happy and that enlargements may­be only burdensome is great when tHe book in question is a valued handbook and even greater when it has passed through the hands of a succession of editors. Then no one person or group feels impelled to hold any line or terri­tory against change as editors exercise their different points of view, ernphn-

1 1 6 C&E Ν M A Y I 3, I 9 5 7

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LITERATURE

size different aspects of the same data. If you have approached the ob­

viously larger and "completely revised" fifth edition of the Condensed Chemi­cal Dictionary with any such expecta­tions, let m e urge you to quiet your fears. T h e familiar landmarks are still there so tha t you can easily find what you need. The important differ­ence in this and previous editions lies in the much larger amount of informa­tion contained in it tha t has been fitted into a pattern grown familiar through the decades.

Both of the essential criteria of a valuable handbook a re well met here. First, a vast amount of informat ion-enough to answer all bu t a tiny pro­portion of the ordinary day-to-day questions that one encounters—is as­sembled in order in a single volume. This is barely more important than the second criterion: All the informa­tion in such a volume should be easy to find when needed. In that re­spect, too, the present edition fully lives up to its predecessors.

The variety of information that has been assembled in this single volume amazingly embraces the greatest di­versity of chemical compounds , giving the most widely useful facts about them, their origins and their uses;

New Organic Journal Sir Robert Robinson ( lef t) , chairman of the honorary editorial advisory board of Tetrahedron, the new international organic chemistry journal, presents a copy of the first issue to I . R. Maxwell, publisher at Pergamon Press. Sir Robert visited New York for the occa­sion. Tetrahedron, it is hoped , will be fully international in scope and will b e a forum for "original memoirs" on or­ganic chemistry. Because of the large number of papers submit ted, the first issue was a double one. No. 3 of Vol. I will come out in July. Subscription rate is $17 a year. Subscribers certi­fying that journal is for personal use get a rate of $9.88.

Π 8 C & E N M A Y 1 3 , I 9 5 7

A promising new Du Pont Development Chemical for your consideration

N-Phenylglycinë w i t h three dis-tiract chemically react ive centers

D u Pont N-Phenylglycine made its reputation as a dye intermediate. But its versatility is. rapidly expand­ing its use in many different ways.

Each of N-Phenylglycine's th ree active sites —a carboxyl group, a seconder}7 amine group ^ n d the aro­matic nucleus—will react separately- WHiat's more, many unusual derivatives can be made irorn simul­taneous or consecutive reactions involving two or more groups in combination. A few aro sliown above.

So far, published literature indicates an unusual variety of uses for "PG" and its derivatives. Herbi­cides, plant growth substances, polymerization pro­moters, stabilizers for alkaryl sulfonates and virus inhibitors are a few. " P G " has even bcern used as a component in plastics.

NHCH2C00CH3

NCH2C00

- ^ ON-/ VNHCH2C00H

"This is only a keyhole look at its potential. Maybe your research and development will open the door and expose a brand-new way to put N-Phenylglycine to work. We'l l gladly send technical data and a sample. Just drop us a line on your company letter­head. E. I. d u Pont de Nemours & Co. ( Inc . ) , Organic C h e m i c a l s Dep t . , D y e s and Chemica l s Divis ion , Wilmington 98, Delaware.

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LITERATURE

trademarks, trade names, and common names that seem to be assuming an in­creasing share of the job that cannot be as well done by the exact but cum­bersome polysyllabic scientific termin­ology, and a reasonably comprehen­sive selection of technological and sci­entific terms likely to arise and puzzle people in chemistry and chemical in­dustry tha t do not use them constantly. Proprietary names are keyed to their owners in a numbered index. It is un­necessary to give here samples of the treatment that has become familiar through the previous editions of the dictionary; but it is germane to men­tion that the individual items have un­dergone careful and thoughtful edit­ing by the Roses, Elizabeth and Arthur.

The arrangement of the whole con­tents in a single alphabetical order, planned with the fewest possible rules, makes all the material immediately available. Furthermore, clear type of a legible size and character is used freely without the resort to space-sav­ing condensations that annoy rather than help the reader. I like it.

Finally it seems proper to point out that the Condensed Chemical Diction­ary serves well to guide and to help anyone connected with the chemical industry. While a layman outside the industry or profession of chemistry may find it only occasionally useful, one in constant contact with any par t of the broad field of chemistry will find it practically indispensable. I t is no t a dictionary of either the science or the intimate technology of chemistry, but rather it supplies the basic needs of the businessman in chemistry and in so doing answers an amazingly high percentage of all the questions that most chemists need to answer for their nonprofessional brethren.

The Condensed Chemical Dictionary. 5th Edition, xx -J- 1200 pages. Reinhold Publishing Corp., 430 Park Ave., New York 22, Ν. Υ. 1956. $12.50. Reviewed by D. H . Killeffer, Tuckahoe, Ν. Υ.

NEW BOOKS

Gmelins Handbook of Inorganic Chem­istry. 8th edition. Zinc, Supplement Volume. System No. 32. xxxvi + 1025 pages. Verlag Chemie, GmbH., Weinheim /Bergstr. ( West Germany ). 1957. $138.

The international literature from 1924 to 1949. Includes a new chapter on geo­chemistry of zinc. Others include metal­lurgy, industrial production, refining, salts, electrochemistry, crystallography.

(Continued on page 123)

120 C&EN MAY 13. 1957