SECT. VI. FIBRINA. 



in any other plant, as in the plant above specified. 

 But it has been found to exist in Mushrooms and 

 some other of the Fungi. And the juice of the 

 fruit of Hibisctis esciikntus, a West Indian plant, 

 is said to contain such a proportion of it as to render 

 it fit to be employed as a substitute for the white Uses, 

 of eggs, in clarifying the juice of the Sugar-cane. 

 Almonds also, and other kernels from which emul- 

 sions are made, have been found to coritain a sub- 

 stance possessing the properties of curd, which 

 resembles albumen very closely. 



SECTION VI. 



Fibrina. 



FROM the blood and muscles of animals chemists Properties. 

 extract a peculiar substance which they denominate 

 Fibrina. This substance constitutes the fibrous part 

 of the muscles, and resembles gluten in its ap- 

 pearance and elasticity ; its taste is insipid. It is 

 insoluble in water, but soluble in acids and per- 

 haps in alkalies. With nitric acid it yields much 

 of nitrogene; and by distillation it yields carbonate 

 of ammonia and oil. , 



But a substance possessing the same properties Found in 

 has been detected by Vauquelin in the juice of the vesela 

 Papaw-tree. When the inspissated juice of the 

 Papaw-tree was subjected to maceration in water, 

 the greater part of it v/as dissolved. But there re- 



