396 PROCESSES OF LIFE REVEALED RY THE MICROSCOPE. 



Thurston, R. H. The Animal as a Machine and a Prime Motor. (N. Y., 1894). 



See also Science, April 5, 1895, and Journal of the Franklin Institute, January-March, 1895. 

 It is shown that the animal machine is the most efficient of all known machines, and the senti- 

 ment is expressed that a comprehension of the processes of life is of as much interest to the 

 engineer as to the physiologist. 



Whitman, C. O. Evolution and Epigenesis. In biological lectures delivered at the 

 Marine Biological Laboratory at Woods Hole, in 1894. 



In the. prefactory note is given a discussion relating to matter and energy. See also his arti- 

 cles in the Journal of Morphology, Vol. I, pp. 227-252; Vol. II, pp. 27-49; Vol. VIII, i>p. 639-658. 



