574 



SCIENCE 



[N. S. Vol. XLIX. No. 1276 



and A. D. HrftstmrBiLDEB. SubBtances -mere 

 tested by placing 1 gram on a piece of underweax 

 cloth 6x8 em. and wearing next to the skin. 

 Small strips were cut ofE every 12 hours and 

 placed in a glass vessel with lice and eggs. 

 When 100 per cent, were killed in 24 hours the 

 substance was regarded as active. Of 170 sub- 

 stances previously tested cresol was found to be 

 the best, but kUling properties lasted only 24 

 hours when worn. Mono-, di- and tribrom cresols 

 were prepared. Dibrommeta cresol was active for 

 10 days and dichlor monobrom meta cresol for 13 

 days and the sodium salts of tribrominated crude 

 cresol lasted 15 days. These outlasted any sub- 

 stances thus far used in practise. 



ORGANIC DIVISION 



Lauder W. Jones, Chairman 

 H. L. Fisher, Secretary 



The use of sulfur chlorides and chlorine for the 

 production of organic acid chlorides from organic 

 acids: Eogek Adams. 



Synthesis of chlorine derivatives, III.: E. K. 

 Eenshaw and C. E. Gkeenlaw. 



Trimethyl phospMne and certain of its deriva- 

 tives: E. E. Eenshaw and F. K. Bell. 



Trimethyl arsine and its selenide: E. E. Een- 

 shaw and G. E. Holm. 



Fhenylimido phosgene and some reactions of 

 formanilide: W. Lee Levi^is and G. A. Perkins. 

 Phenylimido phosgene was prepared in 95 per 

 cent, yields from thioearbanilide by chlorinating 

 in carbon disulphide or carbon tetrachloride solu- 

 tion. Phenylimido phosgene itself may be used 

 as a solvent for the thioearbanilide on chlorinat- 

 ing. No difS.culty was experienced with ring 

 chlorination and Nef 's method of adding water to 

 the reaction mixture before purification was found 

 unnecessary. With a view to obtaining phenyli- 

 mido phosgene from formanilide, it was found 

 that chlorination in the presence of sulphur chlo- 

 rides led to the formation of 2^ di-chlor formani- 

 lide. In the presence of thionyl chloride chlorina- 

 tion of formanilide yields phenylamido chloroform. 



The ammono-carionous and ammono-carbonio 

 acids: E. 0. Pbanklin. 



The reaction between dimethyl sulfate and ben- 

 zene: Olivee Kamm and S. D. Kibkpateick. 



Contribution to the study of the relationship be- 

 tween chemical constitution and physiological ac- 

 tion: Oliver Kamm. 



A study of some of the carbohydrates of the 

 corn cob: E. E. Eenshaw and W. J. Sueb. 



Synthesis and properties of certain dyes con- 

 taining the furane cycle: E. E. Eenshaw and 

 Nellie M. Natlob. 



The preparation of pure organic chemicals: H. 

 T. Clark. 



Acetylene: William Malisofp and Gustav 

 Egloff. 



Ethane: William Malisoff and Gustav 

 Egloff. 



The occurrence of melezitose in Iwney: C. S. 

 Hudson and S. P. Sherwood. 



The chemistry of electrical insulators: H. C. P. 

 Weber. 



The estimation of mercaptans: E. L. Kbauee 

 and E. Emmet Eeid. 



Alcoholysis as a factor in the determination of 

 saponification values: A. M. Pardee and E. 

 Emmet Eeid. 



1, S-dicholoroether : E. A. Wildman and Harold 

 Gray. In the preparation of 1, 2-dichloroether by 

 direct chlorination of ether it has been found that 

 the process may be readily carried out if two pre- 

 cautions are observed: (1) In order to prevent 

 the material catching fire spontaneously the ether 

 must be at first cooled with an ice and water bath 

 and the chlorine passed in very slowly. (2) To 

 facilitate the escape of the hydrogen chloride 

 formed in the reaction it is practically essential to 

 agitate the mixture violently. Otherwise it tends 

 to accumulate and then suddenly escape with suffi- 

 cient violence to blow the contents out of the 

 flask. 



Aromatic ethers: J. M. Johlin. This paper 

 outlines new methods for making aromatic ethers 

 which are symmetrical, and for certain non-sym- 

 metrical aromatic ethers which have not been 

 made heretofore. 



Charles L. Parsons, 

 Secretary 

 {To be concluded) 



SCIENCE 



A Weekly Journal devoted to the Advancement of 

 Science, publishing the ofEcial notices and pro- 

 ceedings of the American Association for 

 the Advancement of Science 



Published every Friday by 



THE SCIENCE PRESS 



LANCASTER. PA. GARRISON, N. Y. 



NEW YORK, N. Y. 



Ejitered in tbe post-office at Lancutcr, Pa., as lecoiid dan matter 



