730 Recently published Ornithological Works. [Ibis, 



happen to occupy different geographical breeding ranges. 

 In other words, we must recognize representative geo- 

 graphical species as well as representative geographical 

 subspecies. 



The compreliension of Dr. D wight's paper by those not 

 specially familiar with the birds of this genus is greatly 

 facilitated by the series of coloured figures of the birds, 

 showing very clearly the colour-differences of the different 

 species and subspecies. 



Many other interesting points in the paper cannot be here 

 referred to, but all workers in systematic ornithology should 

 consult the paper for themselves. 



Ewart and Miss Mackenzie on the King Penguin. 



[The moulting of the King Penguin {Aptenodytes patagonicu). By 

 Professor J. Cossar Ewart, F.R.S., and Dorothy Mackenzie, F.S.Z.S. 

 Trans. E. See. Edin. Hi. 1917, pp. 115-132, pis. 1-11.] 



The Zoological Gardens in Edinburgh were fortunate 

 enough to obtain a consignment of four King Penguins, two 

 adult and two young, from South Georgia early in 1914, 

 and others have reached them since. The observations and 

 discussion of the moult contained in the paper with the title 

 quoted were made on these birds, the observations chiefly 

 by Miss Mackenzie, whose daily notes for the ten days 

 between August 17 and 27, during which the moult was 

 completed, are given in extenso, togeth r with a series of 

 photographs taken each day. The moult resembles that 

 of a mammal rather than a bird, as the old feathers come off 

 in patches or lumps, and during this period the birds never 

 enter the water. These, together with other valuable obser- 

 vations on the behaviour of the King Penguin in captivity, 

 are detailed in this interesting paper. 



Gladstone's Microphotographs of feathers. 



[The photographic analysis of a feather. By 

 Z.S. ; pp. 1-13, pis. i.-ix. London (Sotheran), ll 



Mr. Gladstone has expanded the paper he wrote for 



[The photographic analysis of a feather. By John S. Gladstone, 

 F.Z.S. ; pp. 1-13, pis. i.-ix. London (Sotheran), 1918. Sm. 4to.] 



