AEROBIOLOGY 



variety of climates, of topographic, altitudinal, and ecological environ- 

 ments, and also the special interests of cities, agriculture, and medicine. 

 An international aerobiological research institute is needed, with labora- 

 tories in temperate and arctic regions and, above all, in the tropics and 

 on remote oceanic islands, about which we know least. 



After exploring the stratosphere, we shall then be better able to tackle 

 outer Space. Time is short; before we know where we are, we shall have 

 the Moon at our doorstep and Mars and Venus on our hands. 



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