64 CROONIAN LECTURES 



I shall try, also, by some examples in 

 physiology, pathology, and therapeutics, to 

 show you that in this third stage of perfect 

 inseparability of matter and force, and in the 

 principle of the conservation of energy, "we 

 have," in the words of Mr. Faraday, " a new 

 stimulus to investigation and a pilot which will 

 lead to discoveries far beyond the region to 

 which our present (biological) knowledge ex- 

 tends." 



