and some other Animal Fluids , 
97 
t . It produces no change in vegetable colours. 
3. It is neither coagulated by heat, nor acids, nor alcohol* 
but is generally rendered slightly turbid by the last re-agent 
4. When evaporated to dryness, the resldqura is very small 
in quantity, and slightly affects the colour of violet paper* 
changing it to green. 
5. By incineration in a platina crucible the residuum Is found 
to contain a minute portion of muriate of soda ; but I could 
not discover in it the slightest indications of iron. 
6 . In the examination of this fluid, I availed myself with, 
some advantage of those modes of electro- chemical analysis, 
whi<?h on a former occasion I have described to this Society.'^ 
When the lymph was submitted to the electrical action of 
a battery, consisting of twenty pairs of four inch plates of 
copper and zinc, there was an evolution of alkaline matter at 
the negative surface, and portions of coagulated albumen were 
separated. As far as the small quantities on which I operated 
enabled me to ascertain, muriatic acid only was evolved at the 
positive surface. 
SECTION IV. 
Some Remarks on the Analysis of the Serum of Blood , 
This fluid has been so frequently and fully examined by 
chemists, that I shall not enter into a detailed account of its 
composition, but merely state such circumstances respecting 
it as relate particularly to the present inquiry, and have not 
hitherto been noticed by the experimentalists to whom I have 
alluded. 
* Phil. Trans. 1809, p. 373, 
o 
MDCCCXII. 
