THE COMPOSITION OF THE SALIVA IN DIFFERENT PHASES OF THE SECRETION AND BY REPEATED STIMULATION

Abstract

The parotid saliva of a dog with a permanent salivary fistula secreted during stimulation varied in composition from that of the different phases of the after-flow. The percentage of organic matter in parotid saliva obtained by different stimuli was higher in the 2nd min. after-flow than in the secretion collected during the 1st min. of feeding. The organic and inorganic content of the after-flow of the successive 5 min. was greatly reduced. The content of organic substances in the parotid saliva of the 2nd feeding was greater only when the interval between the 1st and 2nd feeding was less than 1 min. There was no exact proportionality between the amount of organic substances in the dog''s sub-maxillary saliva and its viscosity. Certain improved methods of determining the organic and salt fraction were employed.