[Annals N. Y. Acad. Sci., XT., No. 14, pp. 293 to 368, September 12, 1898.] 



THE PHYSIOLOGY OF SECRETION. 

 Albert Mathews. 



(Read April ii, 1898.) 



T. Introduction : Page. 

 Criticism of the secretory nerve theory 294 



II. Sympathetic Salivary Secretion : 303 



a. The rate. of sympathetic secretion 304 



l>. The decrease in amount of sahva obtainable upon several successive stimu- 

 lations 309 



c. The augmentation of sympathetic saliva 311 



d. Paralysis of the sympathetic by emptying the ducts and its restoral to power 



by injection of fluid into the ducts 314 



e. The character of sympathetic saliva 320 



/. Further evidence of the muscular nature of the mechanism of sympathetic 



secretion 324 



g. The location and nature of the contractile substance in the gland .... 328 



h. Changes in the gland cells on sympathetic stimulation 328 



i. Summary and conclusion 329 



III. Other Secretions due to Muscle-Action : 331 



IV. Salivary Secretion Ensuing on Stimulation of the Vaso-Dilator 



Nerves : 

 a. The increase in the percentage of organic constituents coincident with an 



increased rate of secretion 332 



I). The post-mortem chorda secretion 337 



c. The nature of the action of atropine and pilocarpine 349 



d. The action of quinine and nicotine 355 



e. Evidence of the osmotic character of the salivary secretions which are ac- 



companied by vaso-dilation 356 



f. Conclusion. The physiology of salivary secretion 358 



V. Some Other Secretions : 359 



a. The secretion of sweat 359 



If. The secretion of the pancreas 360 



VI. General Conclusion and Summary : 361 



VII. Literature : 364 



Annals N. Y. Acad. Sci., XI, September 12, 1898 — 20. 



( 293 ) 



