140 ANIMAL TLUIDS-, 



By comparing the foregoing experiments ajid analyses with 

 each other, this mineral appears to consist of about 

 33 sulphur, 

 66 oxide of zinc, 



99 



with a very minute proportion of iron. 



I am afraid the preceding account will be thought tedious 

 by tiiosc who are in the habit of chemical analysis; but not 

 having been much accustomed to this myself, it seemed the 

 safer way to be as particular as possible in the relation of the 

 foregoing experiments. 



I am, Sir, 



Your most obedient servant, 



J. KIDD. 



VI. 



Second Essay on the Analysis of Animal Fluids, By JoiiK 

 BosTOCK, M, D. Liverpool * 



Method of an- JLn my former essay I endeavoured to ascertain a definite 

 aly^ing com- character for the three primary animal fliuds, albumen, jelly, 

 pound animal . /- i • i i ■ 



fluids. and mucus, and to pomt out tests by means ot which their pre- 



sence might be detected with facility and precision. I now 

 propose to offer some observations upon the method to be em- 

 ployed in the analysis of those compound fluids, of which the 

 three substances above mentioned form a principal part. I 

 shall arrange my remarks according to the order adopted in my 

 former paper, beginning with the consideration of the albumen. 

 Separation and My first object was to discover some method by which the 



propagation ofj.^jj^,j proportion of this substance might be ascertained in any 

 jjtlbmnen, r r 



fluid of which it formed a component part. The application of 



caloric, as appears from my former experiments, affords a very- 

 accurate test of the presence even of the smallest quantitjr of al- 

 bumen ; but I found that it was not possible, by this agent, to 



* Received from the author ; who has also inserted it in the Mo 

 dlcul Journal. The former Essay i,t in our Jounini, xi. '24.1- 



sepa- 



