Recently published Ornithological Works. 171 



his arts, both in the field and in the laboratory. The sight 

 of a fine animal, '' alive or dead, excites in him feelings of 

 admiration which often amount to genuine affection/^ and 

 the " study and preservation of such forms has been for six- 

 teen years his chief deliglit/' There can be no doubt, there- 

 fore, that his book will be found most useful to all engaged 

 either in collecting zoological specimens or in keeping them. 

 Two special chapters arc devoted to instructions as to the 

 collecting of birds, small and great, and four others to mount- 

 ing them as specimens for exhibition. We have, besides, 

 chapters on making skeletons and on collecting birds' nests 

 and eggs. In the latter we are pleased to see the neces- 

 sity of '^positive and unmistakable identification'' duly 

 insisted on. 



12. Leverkuhn on Pallas' s Sand-Grouse. 



[Litterarisches liber das Steppenliulin, III. (Scliliisz = ) Revue, neb^t 

 Original-Mittbeilungen liber die 1888er Invasion. Von Paul LeverkUhn. 

 Monatsb. Deuf,sch. Ver. z. Scliutze Vogelw. xvi. pp. 110, 143.] 



This is the final instalment of Herr Leverkiihn's lucu- 

 brations on Pallas's Sand-Grouse {cf. Ibis, 1890, p. 116). 

 It contains an additional list of authors and citations upon 

 this interesting subject, and notices of recent papers and 

 publications in reference to it. A good general article upon 

 the great irruption of 1888 is still wanted to sum up the 

 question, and we hope shortly to be able to supply it. 



13. Lucas on the Osteology of the Paridse. 



[Notes on the Osteology of the Paridae, Sitta and Chumma. By 

 Frederic A. Lucas. Proc. U.S. Nat. Mus. xiii. pp. 337-345.] 



Mr. Lucas has studied the skeletal characters of various 

 species of Parus, Psaltriparus, Auriparus, JEgithalus, Chameea, 

 and Sitta, and now gives us some account of the results 

 arrived at. In the genus Parus the form of the anterior 

 termination of the vomer is subject to great specific variation, 

 as shown in Mr. Lucas's sketches. Sitta, as he points out, 

 differs from Parus osteologically in many important parti- 



