618 Recently published Ornithological Works. [Ibis, 



XXXIII. — Notices of recent Ornithological Publications. 



Allen's Autobiography and Bibliography. 



[Autobiographical notes and a Bibliography of the scientific publica- 

 tions of Joel Asaph Allen. Pp. xiH-215; 1 portr. New York (Amer. 

 Mus. N. H.). 8vo.j 



As an expression of their appreciation of his services to 

 the American Museum of Natural History the Trustees of 

 that Institution have published this volume containing an 

 account of the life and writings of their veteran Curator 

 of Mammalogy and Ornithology. 



Dr. Allen, who is an Honorary Member of our Union and 

 one of the founders of the American Ornithologists' Union, 

 was born in 1838 in Massachusetts and came of good old 

 New England farming stock. His early life was a hard 

 one, and it was not imtil he came under the influence of 

 Louis Agassiz in 1862 that his taste and craving for natural 

 history were able to get free vent. He went with his 

 teacher on his celebrated expedition to Brazil in 1865, and 

 subsequently undertook exploring work in various parts of 

 the United States. From 1871 to 1885 he was an assistant 

 in the Museum of Comparative Zoology at Cambridge, Mass., 

 and since 188.5 has been a Curator of the American Museum 

 of Natural History in New York. Of late years his activities 

 have been chiefly concerned with mammals, but the list of 

 ornithological titles given in the bibliography numbers 959. 

 Many of these are no doubt reviews and short notices, but 

 still it represents a very large output of ornithological work. 

 We would like to offer Dr. Allen our warmest congratu- 

 lations on his great achievements and hope that he may 

 long be spared us to continue his valuable contributions to 

 our favourite study. 



Bergtold on Incubation. 



[A Study of the Incubation Periods of Birds : What determines 

 their lengths? By W. H. Bergtold. Pp. 1-109. Denver, Colorado 

 (Ivendrick-Bellamy & Co.), 1917. 8vo.] 



In this brochure Dr. Berjiitold has collected together the 



