"Add to this a fickle and variable sky, an atmosphere alternately 

 very moist and very dry, very misty and very clear, Tery hot and 

 very cold, and a temperature so changeable, that in the same day 

 you frill have spring, summer, autumn, and irinter, Norwegian frost 

 and an African sun. Figure to yourself these, and you will have a 

 concise physical sketch of the [climatology of the] United States." 



VOLJET/S "View," 1800. 



"The influence of climate on animal life constitutes the end for 

 which a physician studies the meteorology of the country in which 

 he labors. To understand this influence, it is not sufficient to con- 

 sult his thermometer, hygrometer, and other instruments of science, 

 but he must also look at the species and habitudes of animals which 

 live on its surface, or in its seas, lakes, rivers, and atmosphere. In 

 doing this he will find that climate, in addition to its direct, has an 

 indirect effect on the distribution of animal forms ; through its in- 

 fluence on the growth and dissemination of plants, which constitutes 

 the food of the greater number of animals, especially those which 

 are the prey of the carnivorous." 



DAJTL. DBAKE, M.D. 



430 



