Chemistry and Physics. 211 
Hence the _— is diphenyleneketonecarbonie acid, with the formula 
CAN Go 
cu , and the hydrocarbon has the constitutional formula 
osy CO 
C,H.—CH—C 
et | The authors give the hydrocarbon, therefore, 
C,H,—-—-C 
the name fluoranthrene, ee attention to the fact that Schmitz 
has proved the identity of ier’s fluorene with diphenyleneme- 
thane. In a postscript, Fittig says that he has just seen the paper 
of Goldschmiedt upon idryl, and has no doubt that the hydrocar- 
n C_H. there described is identical wr his rina eran 
5. 5. Simple synthesis of Formic acid. = Mae and Denes Shine 
Studied the reaction of carbonous oxide upon caustic alkali, ob- 
an instructive class experiment. This synthesis is important in 
view of the fact that the hydrogen solidified by — was pre- 
pared by fusing together sodium hydrate and form 
NaOH+H.COONa =CO<ON* +H, The fusion ore place in 
the generator.—Ber. Berl. Chem. Ges., x, 2117, Jan., = - 
pyridine, Hence the acid is pyridine-carbonie aci 
COOH.— Ber. Berl. Chem. Ges., x, 2136, Jan., 1878. G. F. B. 
7. Chemical Philosophy.—As “recent discussions i in the French 
Academy, Soper with the paper of Marignac, translated in the 
f this J 
of molecular mechanics. ‘This epartment of P obyeies involves the 
eee age theory of heat and the kinetic —— of g yes 
ve been developed by such masters as R \ Claadian, 300 
