4 EXPLANATOKT. 



dence in presenting his method as a model to be followed in 

 the absence of a better one. The Instructions will, it is be- 

 lieved, enable any one to become reasonably proficient in certain 

 of the indispensable qualifications of a good working ornithol- 

 ogist. He intends to take what may or may not be a liberty, 

 and to presume that the reader is entirely inexperienced in 

 field-work ; and he begs the further privilege of waiving 

 formality, that he may be allowed to address the reader very 

 familiarly, much as if chatting with a friend on a subject of 

 mutual interest. 



Bendire's Mocking-thiiish, SarporJiynchua Bendirei Cones. 

 See American Naturalist for June, 1873, vol. yii, p. 330. 



