and some other animal Fluids . 
383 
of the curd being collected in the neighbourhood of the nega- 
tive wire, and but little at the positive wire. When this ex- 
periment was so conducted, as to collect the products in 
separate vessels, the predominating ingredients in the contents 
of the negative cup, were soda, and traces of lime ; and in the 
positively electrified vessel, a mixture of muriatic and phos- 
phoric acids. 
After such decomposition of milk, the serum still affords 
sugar of milk. 
6. The Liquor of the Amnios . 
An opportunity having offered of examining this secretion, 
from the human subject, in its pure and fresh state, I shall 
mention the general results of its analysis. 
The liquor of the amnios is almost perfectly transparent, 
hut on exposure to air becomes gradually turbid, and deposits 
a white flaky matter. It renders tincture of violets green, and 
while perfectly fresh does not affect litmus ; but sulphuretted 
hydrogen is soon evolved from it, and then it slightly reddens 
litmus. When heated, it becomes turbid, and lets fall flakes of 
coagulated albumen. Acids render it slightly turbid from the 
same cause. 
Alkalies produce no change, unless when added in consi- 
derable excess : the odour of ammonia is then perceptible. 
Electrical analysis afforded albumen and soda at the nega- 
tive pole, and muriatic acid at the positive pole. Hence we 
learn, that the liquor of the amnios has the properties of a 
dilute solution of liquid albumen.* 
* The difference in the results of the analysis given in the text, and that of Vav- 
quelin and Buniva, most probably arises from the liquor of the amnios examined 
by those chemists, not having been perfectly recent, and perhaps mixed with other 
secretions. Vide Amities de Chimie, XXXIII. p. 270. 
302 
