INDUSTRIAL A N D ENGINEERING CHEMISTRY
December, 1925
Company is the testing plant and laboratories at Westport. These laboratories are fitted out so t h a t in addition t o laboratory work, small-scale tests can be made with various devices of milling and concentrating machines such as tube mills, classifiers, thickeners, agitators, concentrating tables, flotation machines, filters, driers, roasters, etc. The value of this plant has been recognized by metallurgical and chemical engineers and it does a large amount of testing business each year. Dorr machines are now used in the production of copper, zinc, gold, silver, glass sand, asbestos, cane sugar, beet sugar; the recovery of coal, rubber, flue dusts, paper fiber; the manufacture of alum, phosphoric acid, caustic soda, alumina; and the purification of domestic and industrial water supplies and the handling of domestic sewage and industrial wastes. The Dorr machines handle about 80 million tons per year of dry material, which amounts roughly to a mountain cone 1800 feet high with a base
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area of 60 acres. The water handled in clarifiers and screens is about 800 million gallons per day, which is equal to a river 50 feet wide and 4 feet deep running 4 miles per hour. The Dorr Company has its main office in New York, district offices in Denver, Chicago, Los Angeles, Wilkes-Barre, and Joplin. It has also offices in London, Berlin, and Paris, and agents in other countries such as Australia and South Africa. Perhaps one of the most important factors in the success of this company has been the ability which Mr. Dorr has of picking out his associates and according in full value t o each one credit for the work t h a t he has done in the development of the machines and the business of the compnay. A number have been with him since very early in the company’s history, but to both old and new members of the staff Mr. Dorr readily acknowledges the great assistance they have given him. WILLIAMRUSSELL
NOTES AND CORRESPONDENCE Arsonic or Arsinic Acids? Editor of Industrial and Engineering Chemistry: M y attention has been drawn t o a review in your June number (page 656) of my translation of M . Fourneau’s “Organic Medicaments and Their Preparation.” Some of the reviewer’s statements are, t o say the least, set out in a misleading fashion, and there is one t h a t particularly concerns me. I a m accused of “still using the old confusing nomenclature, having overlooked the suggestion of American writers t o call the pentavalent primary acids ‘arsonic acids.’ ” If the reviewer were as familiar with the Journal of the Chemical Society of London as he seems t o expect me t o be with the corresponding American literature, he would know t h a t I personally a m not t o blame. The term “arsonic” has not been accepted by the English society. I accept their ruling; t h e index of the book in question was, in fact, headed with a note t o this effect. M y own view is t h a t confusion is often only increased by inventing new names simply t o replace old ones, but I am not a n authority on t h e question at issue and I write this note merely t o draw attention t o t h e difference in usage, and t o express the hope t h a t a cooperative effort will be made to settle such questions as these. W. A. SILVESTER 10, MOXLEY ROAD,CRUMPSALL MANCHESTER. ENGLAND
September 10, 1925
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Editor of Industrial and Engineering Chemistry: Regarding Mr. Silvester’s translation of Fourneau’s “Organic Medicaments and Their Preparation,’,’ we do not attach any blame t o the translator for the nomenclature of the organic arsenicals included in this work. We do think, however, t h a t the American system of nomenclature for the organic arsenicals is better than the English system, a s i t is much simpler, more logical, and eliminates the confusion attendant upon the use of the older system, This is borne out in the latest monograph on t h e subject, “Organic Arsenical Compounds,” by Raiziss and Gavron, where the system of nomenclature more nearly approaches that adopted by the AMERICAN CHEMICAL SOCIETY and is used by representative American workers in the field of the arsenicals. T o illustrate, we call all organic arsenicals of type RAsOsH2, alkyl or aryl arsonic acids, and those corresponding to the formula RIAsOnH, dialkyl or diaryl arsinic acids, whereas
on the Continent the first are called alkyl or aryl arsinic acids and the second dialkyl or diaryl arsinic acids, thereby making no marked distinction in the naming of primary and secondary compounds. We feel t h a t a n earnest attempt should be made by chemists throughout the world t o agree on a uniform system of nomenclature for all chemical compounds. A t least a start should be made upon the newer series of compounds. George W. Raiziss DERMATOLOGICAL RESEARCH LABORATORIES PHILADELPHIA, PA. October 3, 192.5
SomelEffects of Age on Soap Solutions -Correction The article “Some Effects of Age on Soap Solutions,” by Rosalie M. Cobb [THIS JOURNAL,17, 1134 (1925)1, was stated t o be a contribution from the Research Laboratory of Applied Chemistry, Massachusetts Institute of Technology. The paper should be designated as a thesis submitted in partial fulfilment of the requirements for the M.S. degree a t t h e Massachusetts Institute of Technology.
Calendar of Meetings American-Institute of Chemical Engineers-Cincinnati, Ohio, December 2 to 5, 1925; Berlin, N. H., June 21 t o 23, 1926. American Chemical Society-7lst Meeting, Tulsa, Okla., April 5 t o 9, 1926. American Electrochemical Society-Chicago Beach Hotel, Chicago, Ill., April 22 t o 24, 1926. Association of Chemical Equipment Manufacturers-2nd Chemical Equipment Exposition, Cleveland, Ohio, May 10 t o 15, 1926. Joint Meeting of Rubber Division with the Akron Section of the AMERICANCHEMICALSOCIETY,Akron, Ohio, February 22 and 23, 1926. National Symposium on Organic Chemistry, Rochester, N. Y., December 29 t o 31, 1925, under the auspices of t h e Rochester Section and t h e Division of Organic Chemistry of t h e AMERICAN CHEMICAL SOCIETY.
