HOW THE PLUM FOLLOWED 

 THE POTATO 



OUR FIRST WORK IN CALIFORNIA 



WHAT you need is a complete rest and a 

 change of climate. Go to California 

 for the winter. 



This, or something like this, I am told, is a 

 very common prescription of the New York 

 specialist, or for that matter, of physicians 

 everywhere. 



The value of rest is almost axiomatic, and 

 the benefit to be derived from a change of 

 climate is matter of familiar observation to lay- 

 man and physician alike. 



Now I have more than once called attention 

 to the similarity between human beings and 

 plants as to many of their hereditary charac- 

 ters and environmental responses. And the 

 present case furnishes another illustration in 

 point. 



Rest and change of climate are no less bene- 

 ficial to the plant than to the human patient. 



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