34 B. 8. Burton—Contributions to Mineralogy. 
one of our countrymen, Mr. Gordon, who had travelled across 
this desert, sought to realize, be established, the journey across 
the desert of Gobi will soon be thought nothing of. 
As to Bokhara, of which Englishmen have only painful rec- 
ollections, on account of the murder of. our distinguished offi- 
cers, Conolly and Stoddart, we now know that two Russians, 
. Gloukovsky and Tatarinof, who were for seven months 
captives there, have added much knowledge to that acquired 
by their accomplished countrymen Khanikoff and Lehmann in 
1842 
Those of our associates who may now visit St, Petersburg 
may see pictorial views of Khodjend, Tashkend, and all the 
places taken from the Kokandians in the recent advance of the 
Russians along the Syr Daria and now forming parts of the 
great new province of Turkestan. I learn also, in reference to 
this region, so recently opened out to thé civilized world, that 
M. Struve, the son of the great Russian astronomer, has pre- 
pared a map of the whole province of Turkestan, on a scale of 
40 versts to the inch. 
Deeply interested as we must all be in this grand opening out 
to geographers of a vast unknown country, my first request to 
my eminent friend Admiral Count Liitke must be, that as 
President of the Imperial Geographical Society and also of 
the Imperial Academy, he will procure for our Society copies 
of the maps which, to their great credit, the Russian geog- 
raphers have prepared. 
Art. V.—Contributions from the Shefield Laboratory of Yale 
College. No. XVI. Contributions to Mineralogy ; by Brv- 
ERLY §. Burton, Ph.B., Assistant in the Sheffield Tabora- 
tory. 
I. Enargite from Colorado. 
Amona a series of ores received by Prof. Brush from 
Chas. Johnson of Colorado was a lustrous grayish mi 
