08 Sir E. Home on the coagulating Power 



property belongs, I instituted the following experiments, 

 which were made by my fellow labourers in animal che- 

 mistry, Mr. Hatchett and Mr. W. Brande. 



On the 9th of June, 1812, Mr. Hatchett took the cardiac 

 portion of a chicken's stomach with the gastric glands that 

 open into it, and put it into a glass vessel ; the horny lining 

 of the gizzard was put into another, milk was added to each, 

 and was converted into a curd ; but the curd in the vessel, 

 containing the lining of the gizzard was the firmest. 



Mr. Brande, on the 12th of June, 1812, made a similar 

 experiment with the cardiac portion of the stomach of the 

 hawk, as a carnivorous bird, in one vessel; and the cardiac 

 portion of the fowl, as a granivorous one, in another. The 

 coagulating power of the hawk's stomach was found to be the 

 most powerful. 



To ascertain whether the coagulating power belongs to the 

 secretion of the gastric glands, and is only communicated to 

 the other parts, I instituted the following experiment, which 

 was made by Mr. Brande on the 13th of July, 1812. I se- 

 lected the turkey for the subject of it, as the gastric glands of 

 that bird are larger than in most others. The turkey had 

 been kept one day without food before it was killed, and im- 

 mediately after death the gastric glands were very carefully 

 dissected from each other, on the outside of the membrane 

 which lines the cardiac cavity without opening into it, each 

 gland was then separately removed by cutting through the 

 excretory duct, leaving the cardiac cavity entire and un- 

 opened. 



Of these glands slit open 40 grains were put into a vessel, 

 and two ounces of new milk added. 



