BOOKS

BEYOND THE FLYLEAF Volumetric and Phase Behavior of Oil

Field Hydrocarbon Systems. M. B. Standing. 123 pages. Reinhold Pub­lishing Co., 330 West 42nd St., New York 36, Ν. Υ. 1952. $10. Reviewed by C. K. EIUERTS, U. S. Bureau of Mines, Bartlesville, Okla.

D R . STANDIKC has prepared a book well suited to the needs of the young engineer or technologist who is anxious to utilize his academic knowledge i n aiding solu­tion of problems of the petroleum and natural gas industry. Although much scientific infonnation has been uncovered in the past 2 0 years pertaining to efficient production of hydrocarbons from high-pressure reservoirs, technical needs have not been fulfilled, and the trade literature contains a slightly perplexing variety of suggestions for bridging some of the gaps. With a backgrounnd of both academic and industrial experience, Dr. Standing has presented a selection of methods for utilizing available infonnation to the best advantage in solving many engineering problems. Examples of representative solutions have been carefully illustrated with step-by-step instructions, and indi­cation is given occasionally of the un­certainty involved in approximations that may b e necessary.

LARGEST, MOST COMPLETE EDITION PUBLISHED THE CONDENSED

CHEMICAL DICTIONARY 4th edition

Edited by FRANCIS M . TURNER Now in its fourth big edition s this famous refer­ence volume is larger and more useful than ever before. Covering all recent developments in chemicals andrelatedmaterials,newsubstances, trade names, uses, applications, formulas, properties, synonyms, derivations, containers, shipping instructions, safety regulations, proc­esses, i t is of utmost value to everyone requir­ing quick, accurate chemical data. Includes hundreds of definitions of common chemical terms.

760 pases $12.00 Write today for a copy on ΙΟ-day approval

REINHOLD PUBLISHING CORP. Dept. M-488, 330 W. 42nd St., New York 36. Ν . Υ.

Although information on phase behavior of natural hydrocarbon systems is pre­sented under the categories: gases, con­densate systems, and dissolved gas sys­tems, the divisions of the book could have been made on the basis of sampling, P-V-T relationships, vapor-liquid equilib­ria calculations, and material balance concepts with about equal advantage to many readers. Considering the present state of t h e literature, the section on vapor-liquid equilibria should be espe­cially helpful to those who have occasion to calculate phase relationships for pres­sures exceeding 1000 pounds per square inch. The concept of "convergence pres­sure" gradually developed through the years for extrapolating reliable values of "equilibrium constants" to values that are applicable at pressures approaching the dew- and bubble-point pressures of hy­drocarbon systems is presented in helpful detail by means of charts and problem ex­amples.

The reader with experience in the field covered by the book may not fully agree with Dr. Standing in all of his conclu­sions but wall b e inclined to believe that the author would be one of the first to modify his procedures and conclusions when substantially, better information be­came available.

Chemie-Lexikon. Rev. ed. in 2 volumes. H E R M A N N ROMPP. 2000 pages. Franckh'sche Verlagshandlung, Stutt­gart, Germany. 1952. DM 168. Re­viewed by AUSTIN M. PATTERSON, Xenia, Ohio.

X H E descriptive style of this book is what one might expect of a small encyclopedia. The entries vary from a line to several pages. There are few tables, and line drawings are used sparingly. .Among the entries are found, besides the elements and a selection of compounds, trade names of all sorts, phenomena, apparatus, minerals, noted chemists, chemical firms, Latin terms, and abbreviations. Litera­ture citations, especially of books, are given in many cases, also the names of the makers of chemical products. Foreign countries are well represented. At "Chemie-Verlage" is a list of chemical publishers, with their addresses; "Chem­iserie Untersuchungs- u. Beratungsstellen" gives a list of German consulting chem­ists; and "Chemotechniker" lists German chemical technical schools. The nomen­clature is conservative; for example, the old ending -in is used in names of acety-lenic hydrocarbons instead of the modern

The Rômpp book and Koglin's "Kurzes Handbuch der Chemie," the first volume of which was reviewed in C&EN ( May 12, 1952, page 2028) , do not overlap much. Corresponding to the first 300 (alpha­betically arranged) entries of Koglin are 66 of Rômpp, with only 18 entries in

common. The Koglin compilation is one of elements and compounds, with em­phasis on physical data, while Rômpp is more general and descriptive.

The Chemie-Lexikon should be a valu­able reference book, for the general Ger­man reader as well as for the chemist. The binding is in plain dark blue cloth, and the paper and printing are excellent.

Dental Caries Information

Complete interpretive reviews concern­ing experimental dental caries; prevalence; pathology; and relationships between caries and oral environment, nutrition, and fluorine are included in "Survey of the Literature on Dental Caries." The survey has been prepared under the supervision of the Committee on Dental Health of the Food and Nutrition Board, National Re-* search Council. Over 2000 references are cited in the bibliography. The hook, which contains 567 pages, may be ordered from the Publications Office, National Research Council, 2101 Constitution Ave., Wash­ington 25 , D. C , for $3.00, remittance payable to the National Academy of Sciences.

N E W BOOKS

The Atom Story- J. G. FEINBERG. vii - f 243 pages. Philosophical Library, Inc., 15 East 40th St., N e w York 16 , Ν. Υ. $4.75.

Subtitled, "Being the Story of the Atom and the Human Race/* An. historical de ­velopment with lay approach and a strong human emphasis. Foreward by Frederick Soddy. Bibliographies of Chemical Engineering

Nomographs. I, II, III, and IV. ( Docu­ments 1599, 1809, 2222, and 2528. F. G. BLANCO AND D . S. DAVIS. 44 pages. American Documentation Institute, 1719 Ν St., N.W., Washington 6, D. C. Mi­crofilm $1.00. Photocopies $6.60.

Commercial Directory of Africa 1950-51 . 279 pages. Publishing and Distributing Co., Ltd., 167 Strand, London W.C. 2 , England. $5.00.

Covers all of Africa but emphasized Kenya, Uganda, and Tanganyika. Includes manu­facturers. ^ h e Design of a Phosphate-Smelting Fur-;

nace. H. A. CURTIS, i v + 63 pages.; Tennessee Valley Authority, Chemical Engineering Bulletin No. 1, Knoxville,!

Tenn. First in a bulletin series distributing TVA technological developments. Describes de­sign developments and operational ex­perience in TVA phosphate furnaces over the past 20 years. A brief preliminary report on the new rotating hearth furnace is included. Stress is laid on engineering design data and formulas. Goethe the Alchemist. R. D. GRAY, Χ -f

311 pages. Cambridge University Press, 32 East 57th St., New York 2 2 , Ν. Υ $7.00.

Traces the pattern of alchemical symbol· found in Goethe's scientific and literarv works. Describes h i s early alchemica. studies and has chapters on the meta; morphosis of plants, theory of colors, anc anatomy, geology, and meteorology. Industrial Safety and Health Handbook

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mining refining • manufacturing

BEYOND THE FLYLEAF

The Industrial Book Co., 1240 Ontario St., Cleveland 13, Ohio. $25 .

Concise guide t o all aspects of plant safety from administration, through ti ie types of hazards, including skin diseases, to housekeeping. Tab-indexed in loose-leaf, expandable binder. The Origin of Metamorphic and Meta-

somatic Rocks. H A N S RAMBERG. xvii -f- 317 pages. The University of Chi­cago Press, 5750 Ellis Ave. , Chicago 37, 111. $10.

A treatise on recrystallization and replace­ment in the earth's crust. Principles o f crystal chemistry and thermodynamics are applied to the study of metamorphic and metasoinatic rocks. Proceedings of the London Heat Trans­

fer Conference. 50O pages. American Society of Mechanical Engineers, 2 9

West 39th St., New York 3L8, Ν. Υ. $10.

A Program o f Financial Planuiing and Controls. Monsanto Chemical Co. Fi­nancial Management Series 103. 55 pages. American Management Associa­tion, 3 3 0 West 42nd St., New York 18, Ν. Υ. Paper, $1.25.

Practices of t h e Monsanto Chesmical Co. described in 11 papers presented before Financial Management Conference of Α Μ Α , Nov. 1 9 - 2 1 , 1952. Radioisotope Techniques. Vol. II Indus­

trial & Allied Research Amplications. Ministry of Supply. Her Maj«esty*s Sta­tionery Office. British Information Serv­ices, 3 0 Rockefeller Plaza, N e w York, Ν. Υ. Paper, $5.75.

Proceedings o f trie Isotope Techniques Conference, Oxford, July 1951, sponsored b y the Atomic Energy Research Estab­

lishment. Includes papers o n general, chemical, and metallurgical applications, gamma radiography, counting techniques, ion exchange, nondestructive testing, static elimination, and radioactive analysis. Rubber Trade Directory o f Great Britain.

1952-53 . 2nd ed. 856 pages. Maclaren & Sons, Ltd., Stafford House, Norfork St., London, W.C. 2 , England. $9.00.

Classified into 15 sections, including manu­facturers, machinery» laboratory equip­ment, chemicals, and who's who. Index is in four languages.

The following documents are available at prices indicated from t h e Superintend­ent of Documents , Government Printing Office, Washington 2 5 , O . C. When no price is indicated, pamphlet i s free and obtainable from issuing organizations.

Department o f Commerce Office of Technical Services

Bibliography of Reports o n Plexiglas and Fiberglas. Feb. 1950. IB 116. 6 pages. Paper, 10 cents.

Bibliography of Reports o n Asphalt. April 1952. IB 119. 6 pages. Paper, 10 cents.

Selected Bibliography of Visual Aids for Industry, Catalogs, and. Lists of Train­ing Films and Filmstrips. Jan. 1950. IB 120. 7 pages. Paper, 10 cents.

Bibliography of Reports on Herbicides. May 1952. IB 121. 4 pages . Paper, 10 cents.

Bibliography of Reports on Fluorine. April 1952. IB 122. A pages. Paper, 1 0 cents.

Bibliography of Reports o n Fluorocarbons. Revised May 1951 , IB 123. 3 pages. Paper, 10 cents.

Bibliography of Reports o n Carbon-Black. March 1950. IB 125. 4 pages. Paper, 1 0 cents.

Bibliography of Reports o n Water Purifi­cation b y Filtration and Pressure Filters. March 1950. IB 126. Paper, 1 0 cents.

Bibliography of Reports on Lithium and Lithium Compounds. Jan. 1952. IB 127. 4 pages. Paper, 1 0 cents.

Bibliography of Reports on Formalde­hyde from Methanol. March 1950. IB 128. 2 pages. Paper, 1 0 cents.

Bibliography of Reports on Fire Extin­guishing. March 1950. IB 129. 4 pages. Paper, 10 cents .

Bibliography of Reports o n Disinfectants. May 1951 . IB 130. 5 pages . Paper, 10 cents.

Bibliography of Reports o n Dextrin. June 1952. IB 131. 2 pages. Paper, 10 cents.

Bibliography of Reports on Shale Oil. April 1952. IB 133. S pages. Paper, 10 cents.

Selected Bibliography of Reports on Phos­phorus, Phosphoric Acid, and Sodium Phosphates. April 1950. IB 135. 2 pages. Paper, 10 cents .

Spray Drying. May 1950. IB 138. 2 pages. Paper, 10 cents .

Bibliography of Reports o n Production of Synthetic Crystals. May 1950. IB 139. 7 pages. Paper, 10 cents.

Bibliography of Reports on Edible Fats and Oils. May 1950. IB 141. 5 pages. Paper, 10 cents.

(Continued on page 837)

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(Continued from page 835) possible multiple-year subscriptions and a "start any time** plan for nonmembers.

The· new plan is not free of difficulties. The -uniformity of expiration date has simplified our system of maintaining rec­ords, "billing, reporting circulation, main­taining mailing stencils, and making cut­offs f o r nonpayment. This has been re­flected in financial savings and in publish­ing costs less than normal. Such benefits must riot l>e given u p without expectation of others o f even greater value.

Attention has been directed to the pos­sibility of sending journals for which sub­scriptions were entered at a rate less than the current one. This is less serious than it appears at first. Wi th rates set in the spring for the following year, the loss on subscriptions entered to begin at times other than Jan. 1 would be a few months at most. For multiple-year subscriptions, the maximum period of discrepancy would be o n e year.

Careful study has been made. The changes are advantageous to the sub­scriber. Trie benefits expected for the ACS seem to outweigh the drawbacks. Cer-tainly, the plan merits a careful trial.

Beyond the Flyleaf (Continued from page 816)

Bibliography o f Reports on Fireproofing Agents. April 1952. IB 144. 4 pages. Paper, JO cents.

Bibliography of Reports on Leather Dress­ing . June 1952. IB 145. 4 pages. Pa­per, 10 cents.

Bibliography o f Reports on Bread-Baking and Preservation. Sept. 1950. IB 146. 2 pages . Paper, 1 0 cents.

Selected Bibliography of Reports on Lig-nin—Properties ~nd Applications. June 1950. IB 147. 3 pages. Paper, 10 cents.

Bibliography o f Reports on High Tem­perature Alloys. Revised June 1951. IB 149. 9 pages. Paper, 10 cents.

Bibliography o f Reports on Flameproofing of Textiles. July 1950. IB 150. 2 pages. Paper, 1 0 cents.

Bibliography o f Reports on Water Repel-laricy and Waterproofing of Textiles. July 1950. IB 151. 7 pages. Paper, 10 cents.

Bibliography o f Reports on Beryllium and Beryllium Alloys. June 1950. IB 152. 7 pages . Paper, 1 0 cents.

Bibliography o f Reports on Sodium Per­borate. June 1952. IB 158. 2 pages. Paper, 1 0 cents.

Bibliography of Reports on Polyvinyl Chloride, Vinyl Chloride Production. April 1952. IB 154. 7 pages. Paper, 10 cents.

Bibliography o f Reports on Science and Technology i n Japan Series. July 1950. IB 157, 2 pages. Paper, 10 cents.

Bibliography o f Reports on Electroplat-

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ing. April 1951. IB 159. 6 pages. Pa-ger, 1 0 cents.

liography of IReports on Selenium Rec­tifiers- Aug. L950. 4 pages. Paper, 10 cents.

Bibliography of Beports ora Dye ing Ma­chines . July 1952. IB Λ62. 2 pages. Paper, 10 cents.

Bibliography of Reports «on Petroleum Geo-Chemistry, July 1952. IB 163. 3

S»ages. Paper, 10 cents. liographv of Beports o n Rubber Latt­

ices. Sept. 1950. IB L 64. 6 pages. Paper, 10 cents.

Fiat Review of German Science, 1939-45 . March 1952. IB 165. 5 pages. Paper, 1 0 cents.

Abstracts of German Paten* Applications. Sept. 1950. IB 166. 2 pages. Paper, 1 0 cents.

Bibliography of Beports on Vulcanization o f Synthetic Rubber. Oct. 1950. IB 168. 3 pages. Paper, 10 «cents.

Bibliography o£ Reports on Synthetic Rubber Accelerators. Sept. 1950. IB 169. 2 pages. Paper, 10* cents.

Bibliography of Reports on» Separation of Gases . April 1952. IB 170. 2 pages. Paper, 10 cents.

Bibliography of Reports o n Oiazo and Ozal id Processes. Aug. 1951. IB 172. Ύ pages. Paper, ΙΟ cents.

Bibliography of Reports ΟΉΙ Paper Mak­ing Machines- July 1952. IB 173. 3 pages . Paper, 10 eents.

List of Special Bibliograpfcaies of PB Re­ports- Nov. 1950. IB1T& 2 pages. #

Bibliography of Reports «on Production o f Carbon Disulfide. Juane 1952. IB 176. 4 pages. Paper, ΙΟ» cents.

Bibliograprrv of Reports ont Utilization o i Industrial Waste. July 3952 . IB 177 5 pages. Paper, ΙΟ cenfcs.

(Continued on pagre 843)

V O L U M E 3 1 , N O . 8 F E B R U A R Y 2 3 , 1 9 5 3 837

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(Continued on page 837)

Bibliography of Reports on Antifouling Paints and Compounds. July 1952. IB 178. 4 pages. Paper, 10 cents.

Bibliography of Reports on Cosmetic Manufacture. Revised May 1951. IB 179. 2 pages. Paper, 10 cents.

Bibliography of Reports on Benzene. April 1952. IB 180. 7 pages. Paper, 10 cents.

Bibliography of Reports on Sulfur Recov­ery Processes. June 1952. IB 185. 6 pages. Paper, 10 cents.

Bibliography of Reports on Colored Smokes. June 1952. IB 187. 3 pages. Paper, 10 cents.

Bibliography of Reports on Manufacture of Board from Wood Wastes. Aug. 1952. IB 188. 2 pages. Paper, 10 cents.

Bibliography of Reports on Tantalum. Dec . 1950. IB 189. 3 pages. Paper, 10 cents.

Bibliography of Reports on Food Preser­vation and Preservatives. Dec. 1950. IB 190. 4 pages. Paper, 10 cents.

Bibliography of Reports on Dehydrated and Dehydration of Food. June 1952. IB 191, 9 pages. Paper, 10 cents.

Bibliography o f Reports on Induction Heating. Dec . 1950. IB 192. 3 pages. Paper, 10 cents.

Bibliography of Reports on Hydraulic Presses. July 1951. IB 193. 5 pages. Paper, 10 cents.

Bibliography of Reports on Production of Yeast. Aug. 1952. IB 195. 9 pages. Paper, 10 cents.

Bibliography of Reports on Soybeans and Soybean Oil. July 1952. IB 197. 2 pages. Paper, 10 cents.

Bibliography of Reports on Silicones. Jan. 1951. IB 198. 2 pages. Paper, 10 cents.

Bibliography of Reports on Light Pe­troleum Products and Derivatives. May 1952. IB 199. 4 pages. Paper, 10 cents.

Bibliography of Reports on Anodic Coat­ings. July 1952. IB 200. 3 pages. Paper, 10 cents.

Bibliography of Reports on Cellulose. Jan. 1951. IB 201. 3 pages. Paper, 1 0 cents.

Bibliography of Reports on General De­terioration. Feb. 1951. IB 202. 8 Êiages. Paper, 10 cents.

liography of Reports on Deteriora­tions! Plastics. Feb. 1951. IB 205. 3 pages. Paper, 10 cents.

Bibliography of Reports on Deterioration: Textiles. Feb. 1951. IB 206. 4 pages. Paper, 10 cents.

Bibliography of Reports on Deterioration: Fungusproofing. Feb. 1951. IB 207. Paper, 10 cents.

Bibliography of Reports on Deterioration: Fungicides. Feb. 1951. IB 208. 11

gages. Paper, 2 5 cents, liography of Reports o n Perchloro-

ethylene. May 1952. IB 210. 3 pages. Paper, 10 cents.

Bibliography of Reports on Portable Gas Generators. July 1952. IB 211. 2 pages. Paper, 10 cents.

Bibliography of Reports on Nitroparaffins. July 1952. IB 212. 4 pages. Paper, 10 cents.

Bibliography of Reports on Sulphuric Acid—Production. June 1952. IB 213. 5 pages. Paper, 10 cents.

Bibliography or Reports on Infrared Phos­phors. July 1952. IB 215. 3 pages. Paper, 10 cents.

Bibliography of Reports on Inks Includ­ing Printing Inks. March 1951. IB 216. 3 pages. Paper, 10 cents.

INDEX TO ADVERTISERS Alberene Stone Corp. of Virginia. . . . 7 8 0 Analytical Measurements, Inc 7 9 6 Atlantic Refining Co 7 7 1

Baker Caster Oil Co 7 9 7 Barnstead Still & Sterilizer C o 8 4 4 Barrett Div., Allied Chemical & D y e

Corp 8 1 7 Bausch & Lomb Optical Co 8 0 7 Biddle Co., James G 8 1 0 Brown Co 7 7 5

Carbide & Carbon Chemicals Co.» A Div. of Union Carbide & Carbon Corp 767:830

Celanese Corp. of America 8 1 2 Central Scientific Co 8 1 6 Chemical Engineering C a t a l o g . . . . . . 8 3 3 Chemical Materials Catalog 8 3 3 Clay-Adams, Inc 8 2 5 Cleveland Vibrator Co 8 4 4 Climax Molybdenum Co 7 7 0 Columbia-Southern Chemical Corp.. . 8 0 5 Corn Products Refining Co 8 0 8

Distillation Products Industries, D i v . Eastman Kodak Co 8 2 9

Dow Chemical Co 779:803 du Pont de Nemours & Co. ( Inc . ) ,

E . I 7 6 9

Eastern Industries, Inc . . , 8 0 2 Enjay Co. Inc 8 1 9 Fischer & Porter Co 7 3 3 Fisher Scientific Co 8 1 1 Floridin Co 8 1 0 Fritzsche Brothers, Inc 8 0 4 Fulton Bag & Cotton Mills 7 3 9

General Aniline & Film Corp 8 0 1 General Chemical Div., Allied Chemi­

cal & Dye Corp 3 r d Cover Glycerine Producers* Assoc 8 1 8

Harshaw Chemical Co 7 3 4 Hercules Powder Co. Inc 8 2 3 Heyden Chemical Corp 4 t h Cover Hilliard Corp 8 2 2 Hooker Electrochemical Co 7 4 5 Hunt Machine Co., Rodney 7 9 3

Industrial Chemical Sales Div. , West Virginia Pulp & Paper Co 8 1 3

Innis, Speiden & Co. Inc 8 2 0 International Minerals & Chemical

Corp 8 1 5 International Nickel Co. Inc 7 6 6

Jefferson Chemical Co. Inc 7 9 5

Îohns-Manville Corp 8 0 9 ournal of Agricultural & Food Chem­

istry 7 7 3

Lucidol Div., Novadel-Agene Corp.. . 8 2 9 Lummus Co 7 8 1 Merck & Co. Inc 7 9 4 Metal Hydrides, Inc 7 7 4 Metal & Thermit Corp , 7 4 2 Michigan Chemical Corp 7 4 1 Micro Metallic Corp 8 2 7 Monsanto Chemical Co 784-785

Niagara Alkali Co 791

Oldbxiry Electro-Chemical Co 786

Patterson-Kelley Co. Inc 807 Pennsylvania Industrial Chemical Corp· 737 Pfizer & Co. Inc., Charles 788-789 Pittsburgh Coke & Chemical Co 743 Plax Corp 800

Quaker Oats Co 738

Reilly Tar & Chemical Corp 2nd Cover Reinhold Publishing Corp 814:833 Rock^vell Mfg. Co 740 Rohm & Haas Co 765

Schleicher & Schuell Co., Carl 744 Schw-arz Laboratories, Inc 798 Solvay Process Div., Allied Chemical

& Dye Corp 787 Stauffer Chemical Co 790

Titeflex, Inc 821 Union Carbide & Carbon Corp., Car­

b ide & Carbon Chemicals Div 767:830

Virginia-Carolina Chemical C o r p . . . . . 777

Welsoach Corp., Ozone Processes Div . 783 "Wheelco Instruments Div., Barber-Col-

man Co 782 Winthrop-Stearns, Inc 780 Witco Chemical Ço 746 Wyandotte Chemicals Corp 799^

DIRECTORIES

835

836

Chemicals Exchange Bers worth Chemical Co. Bios Laboratories, Inc . City Chemical Corp. Concord Laboratories Custom Chemical Laboratories Delta Chemical Works Hormel Foundation

Equipment Mart Ace Glass, Inc. Cleveland Mixer Co. Glass Engineering Laboratories Jarrell-Ash Co. Knight, Maurice A. La Pine & Co., Arthur S. Miller, Inc. , Ray Ta.ber Instrument Corp. U. S. Stoneware Co.

Technical Services 837 Aries & Assoc, R. S. Atlantic Research Corp. Azoplate Corp. Biorksten Research Laboratories Clark Microanalytical Laboratory Coleman & Co., W. B . Evans Research & Development Corp. Leberco Laboratories Research Information Service Tiedcke, Dr. Carl Wisconsin Alumni Research Foundation

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ADVERTISING SALES REPRESENTATIVES H. Victor Orumm, Advertising Sales Manager

New Vork 36—BRyant 9-443O; District Managers—James L. Conklin, A. Stuart Powell , J r . Cleveland 14—NBC BIdg., 8 1 5 Superior Ave., !N. E., PRospect 1-5583; Stephen S. Steiner»

District Manager Chicago 2—111 West Washington Street, RAndolph 6-8497; G. E. Cochran, Vice-President,

Reinhold Publishing Corp.; District Managers·—G. S. Mullin, Jack Thompson San Francisco 5—McDonald-Thompson, 6 2 5 Market Street, YTJkon 6-0647; Roy M. McDonald Los Angeles 5—McDonald-Thompson, 3727 W e s t Sixth Street, Dunkirk 7-5391; Ε. Τ . Thomp­

son Seattle 1—McDonald-Thompson, Termina l Sales; Bids . , Main 3860; Harry Abney Dallas 5—McDonald-Thompson, 6 6 1 7 Snider Plaza, Logan 6283 ; Richard A. W o r t h i n g t o n Denver 2—McDonald-Thompson, Co lo rado National Bank Building, Keystone 46691 Robert

H. Heidersbach

V O L U M E 3 1, N O . 8 F E B R U A R Y 2 3, 1 9 5 3 843