SCIENCE— ADVEBTI8EMEN TS 



THE OESTROUS CYCLE 

 IN THE RAT 



And Its Associated Phenomena 



Long and Evans 



148 pages, II plates, 7 figures in text; paper, $375 



The profound importance of an infallible 

 method of detecting in the Mammalia the periodic 

 function of the ovary, and the possibility, through 

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 be necessary to establish clearly all the charac- 

 teristics of what has been called the normal 

 oestrous or reproductive cycle in the animal chosen 

 for investigation. To that task the present mono- 

 graph is devoted. 



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BROOKLYN BOTANIC GARDEN 



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