144 Recently published Ornithological Works. 



Gyldenstolpe on Birds from Siam. 



[Birds collected by the Swedisli Zoological Expedition to Siatn, 

 1911-1912. By Nils Gyldenstolpe ; with one plate and two figures in 

 the text. Kungl, Svenska Vetenskapsakademiens Handlingar, Band 60, 

 No. 8, 1913, pp. 1-76.] 



Mr. Gyldenstolpe spent about six months in Siam, 

 visiting the eastern and northern parts of that kingdom and 

 collecting assiduously. He mentions 191 species in his list, 

 and obtained examples of nearly all these. Two Timeline 

 birds are described as new — Criniger lonnheryi from the 

 evergreen forests of northern Siam, and Rubigula johnsoni 

 from the Koret plateau in eastern Siam. The male, 

 hitherto undescribed, of JEthorhynchus xanthotis Sharpe, 

 was also obtained for the first time and is figured together 

 with the two new species. The introduction contains a 

 good and ample account of the vegetation and other physical 

 features of the country traversed. 



Heatherley on the Peregrine. 



[The Peregrine Falcon at the Eyrie. By Francis Heatherley, F.R.C.S. 

 "With Photographs by the Author and C. J. King. Pp. 1-73 ; 30 illustr. 

 London (Country Life), 1913. Small 4to. Price 5s.] 



The photographs here reproduced, together with the 

 notes which accompany them^ are the result of work for 

 three successive springs (1910-12) at the same eyrie by 

 Dr. Heatherley and his friends. The exact situation of this 

 eyrie he wisely does not reveal, and though he dedicates 

 his work to '' all egg collectors," he suggests a simple 

 method to employ to circumvent them in their pursuit : — 

 " Wet each egg, and then scrawl all over it with a violet 

 marking-ink pencil. This has no prejudicial effect on 

 incubation, but renders the egg useless to collectors, as 

 the violet marks are more indelible than the natural 

 blotches." 



The field-notes and photographs were made from a 

 portable observation-shed made of tent-material, which was 

 erected close up to the eyrie ; and from this Dr. Heatherley 

 and his friends kept the birds under continuous observation 



