Recently published Ornithological Woi-ks. 6i3 



With regard to Hypodes cinerea, Mr. Neumann believes 

 that it is identical with Hartlaub^s Alseonax lugtns and with 

 Musclcapa cassini Heine (nee Sharpe, Cat. Bds. iv. p. 156, 

 and Reichenow, Vog. Afr. ii. p. 453), and it should also be 

 referred to Alseonax and be known as A. cinereus (Cass.). 



Finally, a third unique type now in tlie Vienna Museum 

 has recently been examined by Mr. Neumann. This is 

 Eremomela hypoxantha Pelz., and turns out to be no 

 Eremomela at all, but the female of a Sun-bird, Hedydipna 

 platura (Yieill.), 



Pearl on the Egg-laying Capabilities of Poultry. 



[Inheritance in Blood-lines in Breeding Animals for Performance, with 

 Special Reference to the 200-egg Hen. By Dr. Raymond Pearl. Ann, 

 Rep. Amer. Breeders' Assoc, vi. 1911, pp. 317-326. 



The Secretory Activity of the Oviduct of the Domestic Fowl. By 

 Raymond Pearl. Proc. Soc. Promotion Agric. Sci. 1911, pp. 29-34. 



The Mode of Inheritance of Fecundity in the Domestic Fowl. By 

 Raymond Pearl. Journ. Experimental Zool. xiii. 1912, pp. 153-268. 



Fat-deposition in the Testis of the Domestic Fowl. By Raymond 

 Pearl and Alice M. Boring. Science, xxxvi. 1912, pp. 833-835.] 



Dr. Raymond Pearl, who is on the staff of the Agricultural 

 Experiment Station of the State of Maine, U.S.A., has sent 

 us a number of his papers, all dealing with various aspects of 

 the fertility of the Domestic Fowl. In the first and third 

 of those mentioned, he discusses the question of the inheri- 

 tance of the egg-laying quality, which he believes is not so 

 simple as it seems. From his numerous experiments, chiefly 

 with Plymouth Rock and Indian Game varieties, he finds 

 that it by no means follows that the record of the fecundity 

 of a hen taken by itself gives a reliable indication of the 

 probable egg-production of the daughters. He finds, how- 

 ever, that high fecundity m.ay be inlierited by daughters 

 from their sire, independently of the dam, while a low 

 degree of fertility may be inherited by daughters from either 

 sire or dam or both. 



These facts seem to be supported as such by a mass of 

 evidence derived from experiments, and these the author 



