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NATURE-STUDY REVIEW [10:6— Sept., 1914 



only shoiild they be used as objective points for field trips with 

 classes and sources of objects for aquaria and class room exercises, 

 but as many facts as possible should be obtained concerning their 

 life and these permanently recorded, for, judging from the way 

 their wood is being cut out and their grass being burned and from 

 the efforts that are being made to drain them by farmers, it looks as 

 if even these small remnants of the old prairie ponds and marshes 

 will soon be effaced and we will lose this last chance to learn a little 

 something concerning the primitive life of this large and biologi- 

 cally unique part of the country, the prairie region. 



Fig. 8. Redwinged Blackbird's Nest attached to rashes, Scirpiis robustiis 



