G. A. BENTALL, 



NATURALIST, 



392, Strand, London, W.C.2. 



MAMMALS. BIRDS* SKINS. EGGS. LEPIDOPTERA. 

 COLEOPTERA. &c. 



BOOKS. CABINETS, STORE BOXES AND COLLECTING 

 APPARATUS. 



Taxidermy in all its Branches. Trophies Mounted. 



Catalogues on any of the above subjects post free on request. 



TO ORNITHOLOGISTS. 



W. F. H. ROSENBERG, 



IMPORTER OF EXOTIC ZOOLOGICAL SPECIMENS, 

 57. Haverstock Hill, London, N.W.3. England. 



Begs to announce ihe publication of a New Price List of Birds' Skins, 

 including over 5,000 species from all parts of the world. 



This will be mailed free on application, as will any of the following : — 

 Mammals (400 species). Reptiles, Batrachians, and Fishes (500 species), 

 Lepidoptera (8,000 species). 



Largest stock of Bird Sk'ns in the world. 



All Museums. Public or Private, should ^vrite for these Lists. 



All specimens sent on approval. 



Please state which Lists are required and name of this periodical. 



In the Press. 



"THE CUCKOO'S SECRET" 



BY 



EDGAR CHANCE, M.B.O.U. 



Illustrated with Kinematographic and other 

 Photographs from the " Cuckoo Film " recently 

 exhibited. 



This book gives a detailed account of Mr. Chance's 

 studies in the Cuckoo problem, 1918-1921, and demands 

 the close attention of all ornithologists. 



Price 7/6 net. 

 SIDGWICK & JACKSON, LTD., 3, Adam St., London, W.C.2 



