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ftomach, which is thrown into its cavity, and 
there animalifes the food *, or aflimilates it to the 
nature of the blood. The power of this juice is 
confined or limited to certain fubftances, efpecially 
of the vegetable and animal kingdoms ; and al- 
though this menftruum is capable of afting inde- 
pendently of the ftomach, yet it is obliged to that 
vifcus for its continuance. 
* In all the animals, whether carnivorous or not, upon which 
I made obfervations or experiments to difcover whether or not 
there was an acid in the ftomach, (and I tried this in a great 
variety,) I conftantly found that there was an acid, but not a 
ftrong one, in the juices contained in that vifcus in a natural 
ftate. 
XXXII. Ex* 
