COMMUNITY ANALYSIS 41 



each in turn with field glasses and notebooks and 

 take down records of the numbers and behavior 

 of those organisms which we happen to recognize 

 at sight and make rough notes concerning the 

 behavior of others which we cannot so recognize 

 and name. We may set traps that will catch 

 certain sorts of specimens that enter the quadrats 

 without killing them and after appropriately 

 labeling them we can turn them loose for further 

 study by observation or by trapping. By so 

 doing we may learn in the course of time of the 

 distribution of a given individual during his 

 normal round of activities. Or we may have to 

 limit ourselves to trapping all the individuals 

 possible and labeling them for future study. With 

 certain other of our quadrats, we may proceed 

 by plumping down a large box over the whole 

 quadrat or a selected part of it and by means of a 

 small opening introduce ether until all the con- 

 tained organisms are dead. These may then be 

 pickled as coming from quadrat "A" on date "B" 

 under weather conditions "C." 



If the quadrats are located sufficiently near a 

 field or base laboratory, we may collect as many 

 individuals as we can from a given quadrat and 

 carry them to our laboratory, there to observe 

 their behavior or to test their reactions under 

 laboratory conditions. Such animals can also be 



