50 On the Schlagintweits* Astronomical points. [No. 1, 



differing as it does by 130' in longitude from the astronomical deter- 

 minations of the Jesuits, when neither Herman nor Robert visited 

 Khotan, while the papers of Adolph perished with him in Kashgar ? 



But how are we to regard the more recent labours in the country 

 adjoining Little Bokhara, which cannot be reconciled to the points of 

 the Schlagintweits ? 



Thus Sarry-Kul, the source of the Amu, which was determined by 

 Wood, the Schlagintweits could not place on their map, according to 

 the determination of Wood, but were obliged to remove it nearly 2° 

 to the westward. 



Issyk-kul is also marked on the map 2° more to the west than it 

 should be, according to the last Russian astronomical determinations 

 in 1859. And if this Lake be marked in its true position on the 

 map of the Schlagintweits, Sarry-kul would then fall back on Yarkand, 

 and the western extremity of Issyk-kul will appear above Asku, 

 which, of course, would be impossible. 



Petermann, in his notice of the labours and researches of the Schla- 

 gintweits, is of opinion that a review of their determinations in Little 

 Bokhara is premature, more especially as the marche-routes by which 

 they were guided, are not yet published. But the astronomical re- 

 sults of 1859, which so distinctly contradict the determinations of the 

 Schlagintweits, belong to the Russian Geographical Society, and this 

 is our excuse for expressing our doubts of the correctness of a certain 

 portion of the results of the brothers Schlagintweit, before receiving 

 the data on which they are based » 



