36 ANIMAL LIFE AND SOCIAL GROWTH 



If to such a study one adds a survey of the 

 environment, including a careful inspection of the 

 physical surroundings, the orientation, construc- 

 tion and size of the buildings and their relation 

 to the unbuilt areas and if there is the further 

 addition of an instrumental survey of the tem- 

 perature, humidity, carbon dioxide, illumination, 

 etc., some of the results that would be expected 

 may be summarized as follows: 



With moderate temperatures many of the 

 animals (people) under discussion would be 

 found in the open air for a great proportion of the 

 time, while with low temperatures or with very 

 high ones, more of their time is spent in sheltered 

 regions. This result would be somewhat puzzling 

 to interpret because of the humidity complications; 

 in fact even a careful researcher with such data 

 before him might conclude that the migration 

 from the cold outside air in winter was as much 

 a reaction to the lower humidity to be found in- 

 doors as to the higher temperatures. A student 

 of light intensity might conclude, with some jus- 

 tice, that the reactions to the open air were due, 

 at least in part, to reactions to light, and that 

 there is some inter-relationship between the light 

 responses and the prevailing temperatures. 



The data made available by such a survey would 

 undoubtedly convince some that there is a sig- 



