1817.] during the Year 1816. 57 
burned, it left 12 parts in the 1000 of charcoal. This residuum 
contained iron, lime, and an alkaline muriate. (See Annals of 
Philosophy, vii. 235.) 
6. Chyle.—We are indebted to the same chemist for an examina- 
tion of chyle collected from the thoracic ducts of dogs within three 
hours after they had been fed. Chyle from vegetable food was a 
semitransparent, inodorous, colourless fluid, having a very slight- 
milky hue. It contained a coagulum like the white of an egg, but 
pink. This coagulum contained albumen. The specific gravity of 
the serous portion was 1°02. It did not putrefy in 10 days, but 
acquired a smell similar to that of sour cream. It contained abun- 
dance of albumen. When evaporated, it left 4°8 per cent. of a 
yellow, deliquescent residue. 
The chyle from animal food was white and opake, and had a more 
distinct pink hue. In other respects it was similar to the preceding. 
Only the coagulum putrefied sooner, and the solid residue of the 
serum was seven percent. ‘These liquids, when distilled, gave out 
moisture, carbonate of ammonia, and a heavy fixed oil. The 
vegetable serum left three per cent. of charcoal, the animal serum 
only one per cent. The presence of iron was recognised in the 
residuum, and the same proportion of salts that exist in animal 
fluids in general. (See Annals, vii. 234.) . 
7. Excrements of Silk Worms.—Brugnatelli has discovered the 
existence of uric acid in the red excrementitious matter emitted by 
the phalenas of silk worms. (Ann. de Chim. xevi. 55.) 
8. Gases in the Intestines of a healthy Man.—MM. Magendie 
and Chevreul lately examined the gaseous bodies in the intestines of 
four healthy young men, who were executed in Paris, about an 
hour after the execution. The results were as follows :— 
In the stomach, the gases consisted of 
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