122 Recently published Ornitholoyical Works. 



of Syrrhaptes paradoxus in May last in the province of 

 Mantua. 



23. Prejevalsky's Fourth Journey. 



[Retvertoye piiteshestviye v tsentrailnoi Azii Ot Kiaktii na istoki joltoi 

 r6ki, izsledovaniye S6vernoi okrainii Tibeta, i put clierez Lob-nor pv 

 basseinu Tarima. 



A Fourth Journey into Central Asia, from Kiakhta to the Sources 

 of the Yellow River, Exploration of the Northeru Borderland of Tibet, 

 and a Route via Lob-nor along the Basin of the Tarim. By N. M. Pre- 

 jevalsky, with 3 maps, 29 photographs, and 3 woodcuts; published by 

 the Imperial Russian Geographical Society. St. Petersburg: 1888.] 



In the present volume General Prejevalsky, whose untimely 

 death we must all much deplore, continues his observations on 

 the central and most remote parts of the continent of Asia. 

 His fourth expedition differed in no essential particular from 

 those previously undertaken by him, and his description 

 again takes the form of a narrative. He has, however, 

 added two chapters, one at the beginning and one at the end 

 of his book, which have no immediate reference to his travels. 

 In the former of these he treats of the method of travel 

 adopted by him on his expeditions ; the second contains his 

 conclusions, more or less epitomized, on the inhabitants of 

 Central Asia. 



As on previous occasions, the author has been assisted in 

 preparing for publication and classifying the scientific results 

 of his observations by several learned specialists. His lati- 

 tudes and longitudes have been computed at Pulkova by 

 Y. K. Dellen ; his altitudes by General Scharnhorst ; his 

 maps have been drawn at the military topographical depart- 

 ment of the Staff Corps ; the drawings and photographs of 

 his companion, Robarofsky, have been photographed by 

 M. Klassen ; his geological collections have been determined 

 by Professor Inostrantsef ; the plants by Academician C. I. 

 Maximovitch ; the mammalia by E. A, Biichner, Curator of 

 the Zoological Museum of the Academy of Sciences ; the 

 reptilia by Academician A. A. Strauch ; and the fishes by 

 Assistant-curator Hertsenstein . 



Casting our eyes over the chapter-headings, we find many 



