38 Chittenden and Hart — JElastin and the Elastose Bodies. 



using for this purpose the elastoses just described as well as elastin 

 itself, and more vigorous digestive fluids, both peptic and tryptic. 



In conclusion, then, we may say that elastin by the action of veiy 

 dilute acid at 100° C, and by the proteolytic action of pepsin- 

 hydrochloric acid, and of trypsin yields two primary cleavage pro- 

 ducts, which bear essentially the same relation to elastin that proto- 

 and deuteroalbumose do to albumin. Further, that protoelastose is 

 practically identical in reactions and composition with Horbaczew- 

 ski's hemielastin. 



The close relationship in composition of all the bodies analyzed is 

 shown in the accompanying table. In considering these results, how- 

 ever, it is well to remember that the pancreatic preparations contain 

 an over large amount of ash, and hence the figures may not be 

 altogether trustworthy. 



