218 



SCIENCE 



[N. S. Vol. LIII. No. 1366 



not be prepared. A large number of inquiries are 

 received for chemicals -which we could never hope to 

 furnish ; in some instances, the preparations could be 

 undertaken, but it is questionable whether the time 

 devoted to working out the method and preparing a 

 stock might not be better applied to some problem 

 for which there is greater urgency. Our desire is 

 to serve the research chemists of the United States, 

 but to do this to best advantage it is necessary to 

 consider the interest of the greatest number. We 

 acknowledge with gratitude the continued support 

 of the chemical manufacturers, who have supplied 

 us not only with their regular products, but often 

 with those which are available in quantities too 

 small to place on the open market. The amount of 

 chemicals sold continues to increase slowly but 

 steadily, and the department is now almost self- 

 supporting. It is at present being transferred to 

 new laboratories especially designed and erected 

 for the work, and it is expected that greater effi- 

 ciency will be possible than in the improvised lab- 

 oratory where the work was begun. 



The production of benzoic acid and iensophe- 

 none from hensene and phosgene: Egbert E. Wil- 

 son and EvEEETT W. Fuller. 



The nature of the reactions of anilines upon 

 nitrosophenol : Carleton E. Corran and C. E. 

 BoORD. Experimental evidence shows that the first 

 reaction product between aniline and nitrosophenol 

 is quinone phenylhydrazone. Dilution or neutrali- 

 zation of the reaction mixture converts this 

 substance into its tantomer phenyl-azophenol. 

 Subsequent action of aniline upon the quinone- 

 phenylhydrazone converts it into mono-anilino 

 quinonephenylhydrazone, dianilino quinone and 

 azophenine, in turn. The theory is proposed that 

 the formation of indamines by the action of ani- 

 lines upon nitrosophenol is due to the semidine re- 

 arrangement of quinone-phenylhydrazones. 



Seduction of polynitrophenols by hydrogen sul- 

 phide in the presence of ammonia: L. Chas. Rai- 

 FORD. In the preparation of starting material with 

 which to test further the migration of aeyl noted 

 in a previous paper (Jour. Am. Chem. Sac, 41, 

 2068 (1919)), with a view to determining the ef- 

 fect of acid-forming substituents in the amino- 

 phenol 2, 4-dinitrophenol was reduced by hydrogen 

 sulphide in the presence of ammonia in the usual 

 way. Contrary to what has heretofore been re- 

 ported, isomeric substances were obtained. Work 

 is in progress to determine the effect of other 

 substituents (compare Ansehutz und Heusler, Ber., 

 19, 2161 (1886)). 



The action of ammonia and substituted amines 

 on allophanic ester: E. B. Dains and E. Wer- 

 theim. 



Bydrazoisopropane : H. L. Lochte and J. E. 

 Bailey. 



A convenient method for preparing certain 

 bromohydrins : J. B. Conant and E. L. Jackson. 



Addition reactions involving an increase in va- 

 ence of a single atom: J. B. Conant. 



New derivations of thymol and carvacrol: D. S. 

 L. Sherk and Edward EIremers. The quinhy- 

 drone hypothesis of plant pigments, as it grew out 

 of the biochemistry of the Monardas, necessitated 

 a revision of the underlying compounds. This 

 study has been continued, especially along the line 

 of intramolecular changes such as manifest them- 

 selves in connection with the nitroso compounds of 

 the above mentioned phenols and their isonitroso 

 rearrangement products. 



The action of amines upon thymoquinone : Nellie 

 A. Wakeman and Harlan G. Groptman. Di- 

 methylamidothymoquinone, prepared according to 

 Zincke, yields a platinic chloride double salt con- 

 taining 41 per cent, of platinum, corresponding to 

 the union of one molecule of the base with two of 

 acid platinic chloride. Thymoquinone treated with 

 benzylamine, in alcoholic solution, yields di- 

 benzylaminothymoquinone, with some mono-benzyl- 

 aminothymoqninone. Thymoquinone with aniline, 

 also with p-toluidine, under the same conditions, 

 yields the di- derivative. No mono- derivatives 

 have been isolated here. Thymoquinone with piper- 

 idine, under the same conditions, yields a pale 

 purple crystalline derivative, the constitution of 

 which has not yet been determined. 



Organic mercury compounds of phenol: Frank 

 C. Whitmore and E. B. Middleton. 



Charles L. Parsons, 



Secretary 



SCIENCE 



A Weekly Journal devoted to the Advancement of 

 Science, publishing the official notices and pro- 

 ceedings of the American AssociatioB for 

 the Advancement of Science 



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