Vol. XXIVT 

 1907 J 



Felger, Card System of Note-keeping. 



203 



gist. A note on a hybrid or a note on the killing of one bird by 

 another would fall under this head. In such a case the names of 

 both birds should be placed at the head of the 'extension card' 

 and the card should be filed under the name of the bird considered 

 of the greater importance in this case. Under the name of the 



JUL 5 1906 



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ENVIRONMENT 





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FlG. 2, CARDS 1 AND 2. 



bird of the lesser importance should be placed a card referring to 

 this note and indicating where it is filed. 



The cards are ruled and printed on one side only, the notes 

 being confined wholly to this one side. Any drawings made to 



