

PREFACE. 



The Comparative List of Birds of Rome and Philadelphia, 

 which was first published in the 33rd No. of the '* Nuovo 

 Giornale de' Letterati," and printed as a separate Tract at Pisa 

 ^ in 1827, having met with the kind attention of several eminent 

 Ornithologists, both in this country and on the Continent, I 



X have been induced to publish on the same plan, a general enume- 



^ ration of the Birds of Europe and North America, which, besides 



giving the comparative Ornithology of these two regions, con- 



j tains the most complete list hitherto published of the Birds of 



,, each, arranged under their respective Genera and Tribes accord- 



I ing to the present state of Ornithology. 



H 



^ The Genera are arranged in these lists in Families and 



^ Tribes according to the general system of Birds on which I have 

 ^ been long engaged, and which I now hope very shortly to bring 

 ^ before the Public. It is necessary to make this remark, as some 

 W ' of the groups may not appear to follow in their most natural 

 ^ order, if the Birds in the list are alone taken into consideration ; 

 I but this arises from my series of affinities being filled up and 

 "^ completed by Birds which are not found either in Europe or 

 North America. 



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