THE SYMPATHETIC SYSTEM 351 



pancreatin and other similar ferments, to make up for a 

 deficiency of certain external secretions, so an attempt is 

 made to introduce into the organism, by means of injec- 

 tion or ingestion, certain products of internal secretion, 

 the absence of which is causing a variety of disturbances. 



Another important fact has been a great help to modern 

 organo therapy, that is, the elective action of the extracts 

 of an organ, on this same organ. 



The mode of action of organo therapy can, therefore, be 

 brought about in several ways. 



MODES OF ACTION OF ORGANO THERAPY. 



From what we have just said, we see that organo ther- 

 apy can be looked at as a substitute method, a stimulat- 

 ing method and finally, as a purely symptomatic method. 



ORGANO THERAPY AS A SUBSTITUTE METHOD. As 

 was the conception of Brown-Sequard we have seen that 

 medication by means of the extract of organs could be 

 used to replace a more or less deficient function of an 

 internal secretion. Any organ, being the specialized 

 manufacturer of a useful circulating substance, the patho- 

 logical decrease, and still more, the suppression of this 

 organ must deprive the body of its products; from this 

 local disturbance must result an effect on the whole 

 organism and particularly certain other organs which 

 acts functionally with the affected organ. 



From this physiological disequilibrium may arise a 

 variety of troubles, more or less intense, depending on the 

 importance of the internal secretions which have been 

 decreased or suppressed. These disturbances are varied, 

 since the organs secondarily affected by this deficiency 

 also have their secretions more or less modified. 



Organo therapy, considered as a substitute method, acts 

 by obtaining from a healthy organ the various products 



