48 On the Schlagintwerts’ iNo: £ 
But the Schlagintweits express their doubts as to the correctness of 
the determination of time at Lé on the 11th July, and, therefore, do 
not take it into account. Nevertheless, an error of no less than 10’ 
must, in all probability, be suspected in the longitude of the Karako- 
ram pass as well as in the longitude of Lé. It remains, consequently, 
open to doubt, which longitude is to be accepted, that given by the 
Schlagintweits, or that previously adopted by Humboldt, which 
Thompson, who visited this pass in 1848, found to. be quite accurate. 
Up to this point, the corrections are less than 5°, and applied to the 
map attached to the description of their journey, they excite curiosi- 
ty, but not surprise; but the upper portion of the map representing 
Central Asia puzzles every one, by its marked difference to every 
thing that has hitherto been known of these countries. It is sufficient 
to say that the position of the three bases of the cartography of this 
part of Asia, namely the towns of Khotan, Yarkand and Kashgar, 
disagrees with those hitherto generally accepted, by nearly 180 versts, 
for all the three points nearly equally lie 10’ in latitude, and 130’ in 
longitude, more southward and westward, according to the dictum of 
the Schlagintweits. 
At the same time, the determinations of little Bokhara, which 
belong to the Jesuits, cannot call forth strong doubts ; on the contrary, 
there is strong reason for believing, that if these determinations are 
not altogether correct, they are but very slightly incorrect. In Djun- 
garia, there are several points determined by the Jesuits, and some sub- 
sequentlysby me in 1859. From a comparison of these determina- 
tions, it becomes evident that the latitudes given by the Jesuits are 
correct toa minute. But the astronomical observations in Djungaria 
were, in all probability, not made by the Jesuits themselves, but by 
Chinese whom they had instructed. It must therefore be supposed, 
that the points in little Bokhara, where the Jesuit fathers worked 
themselves, are equally correct. As regards the longitudes, it is well 
known that the existing itineraries coincide periectly well with the 
determinations of the Jesuits, though it must be acknowledged that 
the marche-routes having almost a meridional direction, cannot point 
out any appreciable error in the longitudes. Generally speaking, the 
better acquainted we become with Chinese Turkestan, the more con- 
vinced we are of the accuracy of the determinations of the Jesuits. 
