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The Increasing Abundance of the Opossum (Didelphis virginiana Shaw) 

 IN Northern Indiana. By Albert B. Ulrey. 



[Abstract.! 



During the past year my attention has been called to the fact that an unusual 

 number of specimens of the Common Opossum has been taken. On inquiry I 

 found this was true not only in the immediate vicinity, but reports from other 

 places in northern Indiana indicated a similar increase in abundance. The past 

 few yeai's show a somewhat progressive advance in numbers. 



Temperature of Lake Wawasee. By J. P. Dolan. 



(^ne of the problems presented in the study of the temperature was, "Does a 

 period of stagnation obtain for any considerable period, especially during the 

 summer months?" 



It will be seen by a perusal of the tables and charts that during the winter 

 months, when the lake is covered with ice, that there is only a slight difTerence 

 between the surface and bottom temperatures, but that during the summer months 

 there is much difference. What was only conjectured after a few months' observ- 

 ation last year is now conclusively shown, namely, that no condition of stagnation 

 obtains during the summer and autumn months. 



It will also be seen that, notwithstanding Lake Syracuse is forty feet shallower 

 than Wawasee, the temperature of the former is from one to two degrees higher, 

 both top and bottom, than the latter during the summer months. 



