of the Secretion of the gastric Glands. ■. 99 



40 grains of rennet were put into a second vessel, to which 

 the same quantity of milk was added. 



40 grains of the lining of the cardiac cavity of the turkey, 

 ahd the same quantity of milk were put into a third vessel. 



40 grains of the fourth cavity of a calf s stomach in a recent 

 state, with the same quantity of milk^ were put into a fourth 

 vessel. 



The experiment commenced at ten o'clock in the morning, 

 at half past ten the milk with the rennet became thick, at 

 twelve curd was formed, at two whey separated, at four the 

 formation of curds and whey appeared complete. 



At half past eleven the milk with the glands became thick, 

 at one curd was formed, at three whey separated, at six the 

 formation of curds and whey was complete. 



The milk with the portion of the recent calf's stomach un- 

 derwent the same changes at the same periods. 



The milk with the cardiac membrane of the turkey at four 

 became thick, at eight curd was formed, the separation into 

 curds and whey was not complete till next morning. 



A portion of the same milk in twenty-four hours had un- 

 dergone no change, except that cream had separated. 



The rennet in a dried state consisted of four times the 

 quantity of membrane employed in the experiment with the 

 recent calf's stomach, which accounts for its more readily 

 producing coagulation. 



From these experiments, it is clear that the secretion of the 

 gastric glands possesses the power of coagulating milk, and 

 gives that power to all the parts by which it is imbibed, whe- 

 ther composed of living parts or not, since the horny lining 



Os 



