CHAP. II.] ITS DISEASES. SO 



illustration of the uses of the cellular membrane, 

 first mentioned by old Dr. Bartlett, of Windsor, in 

 1764, is that of" the inside of a shoulder of veal, 

 which butchers blow up with tobacco-pipe, or quill, 

 to delude their customers." When the animal be- 

 comes adult, or full grown, the membrane that is so 

 capable of being blown up, is filled with strong 

 fibrous and vascular meat, and shews the impro- 

 priety of pushing young animals in their work be- 

 fore these solids have so reached maturity. 



Experiment. — If one draw in his wind, and keep 

 it longer than usual, a sense of fulness is imparted 

 to the solids. This is no other than the cellular 

 membrane being filled with air. 



When once divided, membrane of either species 

 never again unites as before, but in case of healed 

 wounds the granulations of new flesh hold the di- 

 vided parts of membrane to their respective places ; 

 the obstruction thus occasioned in the deposite of 

 blood causes pain upon change of weather, when 

 the new flesh either expands or contracts, as it may 

 be affected by heat, cold, or by humidity. In the 

 human physiology, another sort of distinction is 

 made between the kinds of membrane, tending to 

 shew whether their respective secretion partakes 

 most of a watery, a slimy, or an oily nature ; but 

 this view of the affair is not strictly applicable to the 

 physiology of the horse. Our reason for abandoning 

 that course was given at section 21. We may, 

 however, here aptly observe, regarding that species 

 (the slimy or mucous) which lines the nostrils, 



