OF BARON HUMBOLDT. 37 



facts thus obtained ; and publish regularly 

 the medial results of these united researches. 

 The special mineralogical and geognostical 

 investigations of this Asiatic journey becams 

 a separate field for the companion of Hum- 

 boldt' s expedition, Gustav Rose, who published 

 the results under a special title, " Mineralogi- 

 cal-Geognostical Department, and Historical 

 Account of the Expedition. " The whole work 

 is entitled, " Expedition to the Ural, Altai, 

 and the Caspian Sea, by order of the Emperor 

 of Russia, in the year 1829, undertaken by 

 Alexander von Humboldt, Gr. Ehrenberg, and 

 Gustav Rose." Before, however, the third part 

 of the work, which contained the results of 

 Ehrenberg's botanical and zoological researches, 

 and the geography of plants and animals, had 

 appeared, Humboldt himself published a new 

 work, entitled ; " Asie Centrale, Recherche s 

 sur les Chaines des Montagues, et la Climato- 

 logie cornparee," Paris, 1843, in three 

 volumes. 



In this important undertaking, Humboldt 

 received the voluntary and cheerful assistance 

 of the most able scholars in the Oriental lan- 

 guages, and likewise the co-operation of such 

 renowned scrutateurs as Klaproth, who fur- 

 nished new notes from Chinese sources ; Stanis- 



