28 G. F. Barker—Physiological Chemistry. 
brown by iodine. Its aqueous solution is opalescent, but be 
comes rapidly clear on boiling with dilute sulphuric acid; 
though prolonged boiling is necessary to convert it into su 
gar, : 
His analysis yielded the formula €,H, ,9,. soe liver of dogs — 
contained on an average two per cent of glyco 
(39.) In a communication by PotssEUILLE ed J. Leror to . 
the iA baddatily + they state that in some physiological reccar I 
made by one of them, certain results were obtained, which w 
inexplicable except upon the assumption that elucose is aes 
stroyed in the lungs, But this is admitting the glycogenié 7 
hypothesis ; and since the radical objections made to 
enough to shake the strongest faith in it, they have andee 7 
taken, before giving their assent to it, to re-examine the whole 
subject ab ovo, seeking for glucose not only in the liver, but — 
also in other organs of "vertebrate animals. The livers of both 
fresh and salt water fish afforded, in some instances, from — 
0-484 to 15 per cent of sugar ; but the intestines, spleens, 
roes, ovaries and muscles yielded none. In other cases, nO — 
sugar was detected anywhere. The liver of fre gave 0°315 — 
to 0-632 of sugar; the viscera and muscles none, Birds gave 
the same result as fishes ; ; the liver contained from 0 to 2°16 
per cent of sugar, the viscera none. With mammals, the liver | 
of hares gave none, of roe-deer 1-092, of three rabbits 1 to” 
ernie state 0-624 per cent of sugar ; the other viscera and | 
the muscular tissue gave none, Since sugar is destroyed when 
left in contact with decomposing animal matter, the authors 
infer that when a liver affords no sugar, it is because of such a — 
change. They state that they have found sugar in the juice of 
the horse-flesh upon which their dogs were fed, as also in 
onciata veal, beef and pork, though in minute quantity, @ 
milligrams for 100 grams of meat. The following experi- | 
ments were made to ascertain the origin of this sugar: 
A.) Ake weight 33 kilos. fasting for 60 hours ; had been fed 
ra month with 3 to 4 kilos. horse-meat daily. The liver 
0-141, hepatic blood 0°821, ie carotid, inferior vena caval 
pone small intestines, mesenteric canglions , none ; blood of : 
ntricle, traces ; ’ of left ventricle, lungs, spleen, kidneys, 
brain, urine, muscle, none. None of these fluids contained — 
dextrin ; the same is true of the organs, except the liver,—the — 
decoction of which was slightly reddened by iodine, and the 4 
muscles, in which the coloration was more decided. Without 
much doubt the a sta though it contains no sugar, ee q 4 
contains a substance which is transformed into sugar; but 
C. R., ee 
yielded 1-487 per cent parece, the lymph of the thoracic duct 
ree 
