Some Cases of Spontaneous Secretion 



97 



bath of the mouth and can be seen on swallowing in the oeso- 

 phagus of the horse, ox and sheep (Colin, 1871; Ellenberger and 

 Hofmeister, 1887; Scheunert and Krzywanek, 1930). It has been 

 found that biopsy specimens of human palatine mucosa or pieces 



Cyanide 



Fig. 5.1. Spontaneous secretion from the cat's sublingual glands, isolated in 

 baths containing oxygenated Tyrode solution at 38 c. 



Upper diagram: right gland. Lower diagram : left gland. The upper diagram shows in addition 

 the secretion during 35 minutes before the right gland was dissected out from the cat (chloralose 

 anaesthesia). Pilocarpine hydrochloride 2.io~ 6 was added to the fluid bathing the right gland, 

 sodium cyanide 2. io - * to that bathing the left gland. Rate of secretion = ml./5 min (Emmehn, 

 1953). 



of the hard and soft palates of the rat kept for some hours in 

 saline or Ringer's solution become covered by a film of thick 

 saliva ; the addition of atropine does not prevent the formation of 

 this layer which is supposed to be due to spontaneous secretory 

 activity in the palatine glands (Ostlund, 1953). 



The continuous parotid secretion of ruminants has recently been 

 further analysed (Coats, Denton, Goding and Wright, 1956). 



P.S.G. H 



