September 27, 1901.] 



SCIENCE. 



487 



ode chamber. This precipitate, purified as 

 carefully as possible, contains about 2,8 

 per cent, of phosphorus and 16.41 per cent, 

 of nitrogen. Its properties do not entirely 

 coincide with any known class of proteids, 

 but approach more nearly to those of the 

 nucleo proteids. It is difficultly soluble in 

 pure cold water, easily soluble in hot or 

 boiling water and separates from the hot 

 solution unchanged on cooling. By pepsin- 

 hydrochloric acid digestion it yields a sub- 

 stance containing about 7 per cent, of phos- 

 phorus. Decomposition by boiling with 

 sulphuric acid and subsequent treatment for 

 nitrogen bases yields a white, crystalline 

 substance containing nitrogen. The anode 

 chamber, after electrolysis as above, gives a 

 different substance, also containing phos- 

 phorus. Egg albumen behaves in an an- 

 alogous manner. The cathode product 

 showed about 2 per cent, of phosphorus. 



This paper will be published in the Jour- 

 nal of the American Chemical Society. 



18. ' The Reduction in an Alkaline Solu- 

 tion of 2,4,5 Trimethyl Benzalazine and 

 the Preparation of some Derivatives of the 

 Eeduction Products ' : E. P. Harding. 



By reducing 2,4,5 Trimethyl benzalazine, 



(CH3)3C6H,CH2 • NH ■ N:CHC6H2(CH3)3 



in an alkaline solution, two reduction pro- 

 ducts may be obtained depending upon the 

 degree of reduction — one a 2,4,5 trimethyl 

 benzal 2,4,5 trimethyl benzyl hydrazone, 



{GYi,),C,n,CE.,: NH • N:CHC6H,(CH,)3 



and the other a symmetrical 2,4,5 trimethy 

 dibenzyl hydrazine, 



(CH3)3C6H2CH, • NH • NH ■ CU^C^l{,{Cli^), 



The hydrazone is a weak base. With 

 picric acid it forms the addition product 

 2,4,5 trimethjd benzal 2,4,5 trimethyl benzyl 

 hydrazone picrate, 



(CH3)3C6H2CH2NHNCHC6H2(CH3)3 • C,B^{ NO^lsOH 



The imid hydrogen atom may be substi- 

 tuted by an acetyl, benzoyl or nitroso group 

 forming the corresponding acetyl, benzoyl 

 or nitroso derivatives, viz : 



and 



(CH3)3C6HoCH2N(COCH3)N:CHC6H2(CH3)3 

 (CH3)3C6H2CH2N(COC6H5)N:CHCeH2(CH3)3 



(CH3)3C6H,CH2N(NO)N:CHC6H,(CH3)3 



By the action of hydrochloric acid it hydro- 

 lyzes to 2,4,5 trimethy] benzaldehyde and 

 to 2,4,5 trimethyl-benzyl hydrazine hydro- 

 chloride, 



(CH3)3C6H2CH2 • NH ■ NH2,HC1 



from which the free base may be obtained 

 by the action of caustic potash. 



2,4,5 trimethyl benzyl hydrazine 



(CH3)3CeH,CH2NHNH2 



forms with benzaldehyde, benzal, 2,4,5 tri- 

 methyl benzyl hydrazone 



(CH,)3C6H2CH2 • NH • NlCHCeHg 



With pyroracemic acid, it forms 2,4,5 tri- 

 methyl benzyl hydrazine pyroracemate. 



(CH3)3C6HaCH ■ NH • N:C^ 



.CH3 



COOH 



It is also capable of forming addition pro- 

 ducts. With picric acid, it produces 2,4,5 

 trimethyl benzyl h3^drazine picrate, 



(CH3)3C6H2CH2 • NH • NH2 • C6H2(N02),OH 



with phenyl mustard oil, it forms 2,4,5 tri- 

 methyl benzyl phenyl thio semicarbazide 



(CH3)sC6H2CH2NHNH\ 



C«H,NH 



r 



and with cyanic acid, 2,4,5 trimethyl ben- 

 zyl semicarbazid. 



(CH3)3(CH3)3C6H,CH,NHNH. 

 NH./ 



This paper will be presented in the Jour- 

 nal of the American Chemical Society. 



