Chemistry and Phystes. 65 
is purified by recrystallization from —— It fuses at 195°5°, 
crystallizes in clear colorless monoclinic prisms, sublimes in small 
quantities, is ripen in water, but at in sivobel and acetone, 
and in dilute acids. Its formula is C,,H,,.N,. Heated with ethyl 
iodide: to 120° , yellow crystals of tolubenzaldehydine-ethy] iodide 
are obtained ; and these treated with silver oxide, yield a strongl 
alkaline solution from which on eva poration an oil separated wish 
could not be crystallized. Oxidized with permanganate, . — 
dibenzenylamido-benzoic acid, CH,COOH(NC,H,),. Hence, the 
author assigns to volubienaiadanesine the probable rational acsoaibe 
6 
C,H,< X F Tolufurfuraldehydine, and tolusalicylaldehydine 
—to which he gives the special name azurine because of its mag- 
nificent blue fluorescence—are also described.— Ber. Ber : rips 
Ges,, xi, 590, April, 1878. . B. 
6. he Preparation and Properties of oe Spine has 
investigated snbariatinety the substance which is the inverting 
constituent of yeast, and which Donath called serve in. To pre- 
Eee e it, compressed yeast, freshly prepared, is coarsely pulverized, 
read out in a capsule, and ~— at a temperature not exceeding 
40° , until it can be rubbed to a fine powder between the fingers. 
It is then heated on an air ” path to 100° to 105° for six hours, 
mixed with r toa magma, allowed to stand for twelve 
To free the ferment from er bars gs this treatment 
with alcohol renders insoluble in water—the precipitate is freed 
from alcohol by pressure, digested in just sufficient water for solu- 
tion, and filtered ; the albuminates remain on the filter as a 
gelatinou us mass. On pouring the filtrate into alcohol, the ferment 
is precipitated in the pure form. It is filtered off, washed wit: 
absolute alcohol at least ten times, the excess of alcohol expressed, 
and the precipitate dried in vacuo. e yield is about two grams 
urity. 
sodium hediatn, no violet color appears, showing the absence of 
peptones, No leucin could be detected on long boiling with sul- 
Taran Sears, Vou. XVI, No. 91.—Juxy, 1878. — 
