INSTITUTIONS OF MEDICINE 



PART I. 



PHYSIOLOGY. 



IV. THE doctrine which explains the conditions of the body 

 and of the mind necessary to life and health, is called PHYSI- 

 OLOGY, or the Doctrine of the Animal Economy. " I mean 

 that Physiology considers the matter of which the body is form- 

 ed in its mixt, in its aggregation, and, especially, in its organ- 

 ization or mechanism. With regard to the conditions of the 

 body, Physiology considers every thing that natural philosophy, 

 chemistry, or anatomy teaches with regard to it. But you are 

 to observe that philosophy, chemistry, and anatomy consider 

 the state of the body, and its several parts, abstracted from its 

 several effects. The business of Physiology is only to explain 

 the conditions which these sciences point out as applicable to 

 the exercise of the functions of the body. 



" I have added here a particular in my Physiology that is not 

 common f - and of the mind ;' and some persons may think that 

 this is hardly done with propriety. However the condition of 

 the mind may ultimately arise, we often do see conditions of 

 mind arise, that we cannot trace to a corporeal cause ; while, at 

 the same time, they may produce very considerable effects upon 

 the bodily state ; so that it was necessary to say that Physi- 



