ters in the urine, through the effect of the alkali 

 and boiling-, probably approximate more to the 

 nature of a glue. 



The cellular texture contains in its small cel- 

 lules a particular humour, which, though it has 

 not been examined, we may upon good ground 

 consider as of the same kind with that, which is 

 met with in the cavities of the body, in blisters, 

 dropsy, &c. In some places it contains also a half- 

 fluid fat, the consistency of which may vary in dif- 

 ferent parts, but which, as to its chemical pro- 

 perties, resembles the fat oils from vegetables. 

 In the many different modes of preparation, by 

 which this fat is obtained for technical purposes, 

 it partly receives foreign mixtures, and partly un- 

 dergoes some less perceptible changes of compo- 

 sition, whereby it assumes different qualities. 

 A right knowledge of these circumstances, al- 

 though not very material to Animal Chemistry, 

 would, however, be of great consequence in 

 procuring better and more useful kinds of fat. 

 Among the productions from the distillation of 

 fat, an acid foetid water is obtained, which 

 CARTHEUSER considered to be a peculiar acid, 

 which, when combined with an oil, constituted 

 the fat. &EGNER and KNAPE also examined 



