8o4 



POPULAR SCIENCE MONTHLY. 



being one of the chief grounds. On the whole. Frisky and Winnie 

 are seen to have grown a trifle faster than Tipsy, which would 

 indicate the absence of deleterious ingredients in the wine and 



Frisky. 



Winnie. 



Fig. 13. October, 1896. 



Berry. 



whisky. They were bright, promising puppies to begin with, 

 but they have grown into a sorry-looking lot, as is witnessed by 

 Fig. 13. 



After all, the only true physiological expression of the value 

 of an animal's or a man's life is the total amount of energy de- 

 veloped and utilized during its continuance ; and while, in order 

 to attain to a proper relation to the energy material around it, it 

 becomes necessary for the animal to develop a certain mechanism 

 of this or that size and form, and with such and such parts, still 

 as little energy as possible is wasted in forming the machine. An 

 animal dead, in the chemical composition of its body, contains 

 but a small fraction of the energy which it is able to utilize dur- 

 ing its lifetime, and even the greater part of this is contained in 

 the food from which its body was formed. This fraction, possi- 

 bly one one-thousandth, whatever it may be, would give us the 

 first adequate expression ever obtained of the relative values of 

 human anatomy to human physiology, of the physical body and 

 the life work. 



Thus, in our purely physical and anatomical analysis of the 

 experiment so far, we have studied only this small fraction of 

 the whole life story even of a dog. In going on to the side of 



