4S 



product under similar treatment. A substance, found to have almost ident- 

 ical properties, is described by Japp (Chem. 8oc. Jour., vol. LYII, p. 783). 

 He had formerly ascribed to it the formula Cjr.HjoO,. In the later note 

 he points out that the analysis agrees approximately with the formula 

 C04H20O2. The substance was prepared by Japp's method, namely the 

 action of dilute caustic potash on a mixture of benzoin and acetone in alco- 

 holic solution. It appears to be the same body as that obtained by the 

 action of potassium cyanide, but acetic anhydride acts on it with extreme 

 difficulty only and distillation over zinc dust yields none of the hydro- 

 carbon. 



Pyrone and pvridone derivatives from benzoyl acetone. By Alex. Smith. 



[abstract.] 

 Conrad and Guthzeit's reaction was applied to benzoyl acetone. Cupro- 

 benzoyl acetone was found to yield with phosgene a pyrone derivative pos- 

 sessing the formula— 



O 



II 



C 



'' \ 



C,H-— CO— C ('— CO-C, H, 



II II 



CH,-C C— CH, 



\ / 



() 



Dimethyldi-benzoyl pyrone melts at 188° C With phenyl hydrazine it 

 yields a diphenylhydrazone and with ammonia the oxygen of the ring is 

 replaced by the group : NH and dibenzoyl-lutidone is formed. Similarly 

 the action of aniline gives dibenzoylphenyl-lutidone. These substances 

 are bases who.se hydro-chlorides form double salts with platinum tetra- 

 chloride. 



Carhon dioxide in the urine. By T. C. Van Nuy.s and K. E. Lyon.s, 



From the intense alkalinity of the normal urates, as well as the di and 

 basic phosphates of potassium and sodium, we were led to believe that, 

 ordinarily the urine is not alkaline from the presence of the carbonates of 



