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2 SECOND YARKAND MISSION. 



Central Asia, and as such will, I think, be useful for future reference. The papers relating 

 to the avifauna of the neighbouring countries of Central Asia have also been consulted and 

 quoted, but it must be understood that I have only endeavoured to reproduce the information 

 which affects the zoo-geographical relations of the ornithology of Eastern Turkestan. Space 

 has not been available for the reproduction of all the interesting notes on the habits and 

 breeding of the species with which the works of Dr. Henderson and Dr. Scully teem, neither 

 have I been able to quote at length the valuable critical remarks published by Mr. Hume in 

 'Lahore to Tarkand.' These works must therefore be consulted at all points by the student, 

 as also the excellent introduction which Mr. Hume has written in the latter work, to which 

 I feel I can add nothing of importance. 



I have to acknowledge the assistance I have received in the determination of the 

 specimens from my colleague Mr. W. E. Ogilvie Grant ; and also from Mr. C. Chubb, who has 

 sacrificed much of his time in helping me with the preparation of the synonymy. 



