] 78 Recent Ornithological Publications. 



The external and internal barbs are also much modified in shape 

 and generally curtailed in size. Fig. b gives an upper view of the 

 sixth, and fig. c an under view of the seventh secondary. The 

 corresponding feathers of the female^ representing the normal 

 structure, are seen in fig. b' and fig. c'. In the eighth and ninth 

 secondaries the rachis is still rather thickened ; but the barbs 

 {pogonia), instead of being reduced in size, are highly developed, 

 particularly on the inner side. Mr. Fraser states that the wing- 

 bones of these birds were also much thickened, no doubt in aid 

 of this abnormal structure of the remigesP 



XXI. — Recent Ornithological Publications. 



1. English Publications. 



We have already noticed at some length von Schrenck's import- 

 ant work on the Fauna of Amoorland*. It will not therefore be 

 necessary to say much concerning Mr. Ravenstein's * Russians 

 on the Amoorf,' the chapter in Mr. Ravenstein's volume de- 

 voted to the natural history of this region having been based 

 upon V. Schrenck's discoveries. But we take this opportunity of 

 cordially recommending Mr. Ravenstein's work to those who are 

 desirous of knowing what has been done by Russia and is now 

 going on in this part of the world. They will be pleased to find 

 in Mr. Ravenstein's resume a succinct account of the history, geo- 

 graphy, ethnology, climate, and natural productions of this little- 

 known region, and may save themselves the necessity of hunting 

 for the requisite information on these subjects in the in many 

 cases inaccessible original authorities published in Russia. 



Mr. Boner^s recent unpretending little work J contains some 

 few interesting particulars of the habits of the Capercaillie [Tetrao 



* Ibis, 1861, p. 203. 



t The Russians on the Amoor; its discovery, conquest, and coloniza- 

 tion. By E. G. Ravenstein, F.R.G.S. London : Triibner & Co. 1861, 

 1 vol. 8vo. 



X Forest Creatures. By Charles Boner, &c. London, 1861 (1 vol. 

 12mo, pp. 245). 



