596 



SCIENCE 



[N. S. Vol. L. No. 1304 



of styrene3 produces 9, lO-dimethylaathracene-di- 

 hydride. Toluene gives xylene, mesitylene, pseudo- 

 eumene, ditolylethaue, and 2, 7-dimetlayl anthracene 

 with some 2, 6-dimebhyl and beta monomethyl 

 anthracenes. Ohlorbenzene produces p, p-dichlor 

 diphenylethane and at least one higher compound 

 as yet unidentified. Nitro benzene does not con- 

 dense. The investigation is being continued. 



The structure of azoxy compounds: Oliver 

 Kamm and E. E. a. Campbell. 



The purification and some physical properties of 

 some aliphatic alcohols: R. F. Brunel. 



The limit of esterification of certain aliphatic al- 

 cohols and acids: B. F. Brunel and Elsie Tobin. 

 Schiff iases and related compounds: William J. 

 Hale. 



The oscillation theory of colors — hydrasohenzene 

 and azohensene : Gerald L. Wendt, Euth O 'Brien 

 and F. W. Sullivan. 



The chemistry of the heptane solution: (I.) In- 

 troductory remarks; (II.) Physical constants of 

 heptane: Edward Kremers. 



The chemistry of the heptane solution: (III-) 

 Purification of lieptane; (IV.) Hydrohalogen solu- 

 tions of heptane: D. 0. L. Sherk. 



Sepori on the production of synthetic organic 

 chemicals in the research laboratory of the ISast- 

 man Kodak Company for the year 1918-19: C. E. 

 K. Mees. 



Perchlormethylmercaptan: Oregon B. Helfkich 

 and E. Emmet Eeid. 



Butyl alcohol as medium for saponification: A. 

 M. Pardee, B. Hasche and E. Emmet Eeid. 



Halogen-substituted phenacyl bromides as rea- 

 gents for the identification of acids: W. L. Jude- 

 riND AND E. Emmet Eeid. 



Molecular rearrangement in the aoylation of cer- 

 tain aminophenols : L. Chas. Eaiford. In the prep- 

 aration of diacylated derivatives of certain ortho- 

 aminophenols, in which the acyl radicals bound to 

 oxygen and to nitrogen, respectively, are different, 

 it has been found, upon examination of the prod- 

 ucts, that the heaviest of these radicals was al- 

 ways found attached to nitrogen, regardless of the 

 order in which they were introduced, which indi- 

 cates a rearrangement in one case. The acyl rad- 

 icals so far employed are acetyl and benzoyl, and 

 the bases tested are 2-aminophenol, 2-amino-4- 

 methyl-6-bromophenol, and 2-amino-4, 6-dibromo- 

 phenol. Apparently the presence of an acid-form- 



3 Varet and Vienne, Compt. End., 164r-1375. 



ing substituent in the amiuophenol does not change 

 the course of the reaction. 



A more nearly rational system of units: Elliott 

 Q. Adams. 



Certain metallic derivatives of hydroxy-anthra- 

 quinones: M. L. Crosslet. 



Pyrogenic conversion of phenol to napthalene: 

 M. L. Crosslet. 



Seduction of dihydroxythymoquinone by means 

 of palladium-hydrogen : Nellie Wakeman. Dihy- 

 droxythymoquinone, in alcoholic or ethereal solu- 

 tion, reduced by hydrogen in the presence of finely 

 divided palladium, loses its red color, the solution 

 becoming colorless. Upon evaporation of the sol- 

 vent, in contact with air, the color returns and red 

 crystals of dihydroxythymoquinone result. Evapo- 

 rated in an atmosphere of hydrogen, flaky white 

 crystals are- obtained. These, upon exposure to the 

 air, change to red dihydroxythymoquinone. Re- 

 duced in the same way in acetic acid anhydride so- 

 lution, dihydroxythymoquinone yields a tetra-acetyl 

 derivative which is stable in the air, and separates 

 in colorless prismatic crystals melting at 180°-182°. 



Congo red and some similar disazo-dyes: W. E. 

 Orndoref and F. E. Carruth. 



Synthesis of anthracene from naphthalene : C. W. 



COLVER and W. a. NoYES. 



Positive iodine in derivatives of acetylene: L. 



B. HOW^ELL AND "W. A. NOYES. 



The attraction between organic substances and 

 water, and the adsorption of organic substances: 

 W. D. Harkins. 



Determination of the viscosity of pyroxylin so- 

 lutions: E. F. HiGGiNS and E. C. Pitman. (By 

 title.) 



Ch.^rles L. Parsons, 

 Secretary 

 (To be cmitinued) 



SCIENCE 



A Weekly Journal devoted to the Advancement of 

 Science, publishing the official notices and pro- 

 ceedings of the American Association for 

 the Advancement of Science 



Published every Friday by 



THE SCIENCE PRESS 



LANCASTER, PA. GARRISC*J, N, Y. 



NEW YORK, N. Y. 



Entcfed in tke p(»t-«ffic« «t Laocaritr, Pa., at Mccod dan wmnm 



