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Manual of Veterinary Physiology. 



the result of digestive activity to become very granular. 

 The active pyloric cells also became more granular, and the 

 nuclei left the base of the cell and worked towards the 

 centre of it. During hunger the chief cells of the fundus 

 glands are clear and large, the parietal cells small. 



Xo doubt the appearance presented by the secretory cells 

 depends upon the method by which they are prepared for 

 examination. Langley has therefore, by another method of 

 inquiry, given an opposite description of the active and 

 passive cells of the gastric glands. He found that in the 

 active state the granules decreased in number, the cells 

 becoming clear, and being capable of differentiation into a 

 clear outer and a granular inner zone, just as we have seen 

 in the parotid gland. During rest the entire cell became 

 granular. The parietal cells were found to increase in size, 

 but did not become granular. 



Gastric Juice of the horse has not been obtained pure. 

 The experiments made by Tiedemann and Gmelin of intro- 

 ducing foreign bodies into the stomachs of horses did not 

 lead to a pure secretion, owing to the amount of saliva 

 swallowed. The following table, constructed by C. Schmidt, 

 represents the composition of this juice in man, the dog, 

 and sheep : 



The following table from Ellenberger* gives an analysis 

 of the so-called gastric juice of the horse, and also of the 

 * Op. cit. 



