166 EXAMINATION OF SULPHATE OF QUINIA. 
With regard to the geognostic relations of the kehr places, 
Szabo remarks that the efflorescent product of the kehr places 
contains not only potash saltpetre, but other salts as well, such as 
sulphate of magnesia, and especially carbonate of soda, sometimes 
in such quantity, that it is preferred to make use of the kehr salt- 
petre in the soap factory of Debreczin. 
The formation of kehr saltpetre stands in evident connection 
ivith that of kehr soda. Besides the saltpetre and soda district of 
Debreczin, the soda region forms a broad band running through 
the centre of the great Hungarian plain, especially of the sandy 
ground in the Pesth and Bacs districts. There are in this direc- 
tion a great number of lakes and marshes, the waters of which 
are not in all cases saline. In the saline lakes, the greater part 
of the soda effloresces, not immediately at the water's edge, but 
upon that part of their banks which is left dry by the evaporation 
in warm weather. This spot becomes covered with an abundant 
coating of soda, which is collected by sweeping it together. How- 
ever, soda kehr places sometimes occur in situations which are 
considerably more elevated than those lakes. Szabo refers the 
formation of soda to the action of carbonate of lime in solution 
upon silicates of soda. He is of opinion that carbonate of potash 
is formed in a similar manner, but that on account of its ready so- 
lubility it remains unobserved. 
The detailed description of the processes of washing the kehr 
earth, and the refraction of the lye, that is the addition to it of an 
alkaline lye, the extraction of raw saltpetre by evaporation, and 
the refining of the saltpetre, which operations are for the most part 
carried on by the country people themselves, testifies to the already 
advanced state of the manufacture of saltpetre in Hungary, which 
it is probable however may still admit of considerable extension. — 
Chem* Gaz., from Archiv der Pkarm., vol. Ixvi. pp. 311-316. 
OX THE EXAMINATION OF SULPHATE OF QUINIA, WITH A VIEW 
TO THE PRESENCE OF THE SULPHATE OF CINCHONIA. 
By M. Sgubeiran* 
M. Liebig has suggested the following method to separate cin- 
chonia from quinia in the sulphate: Triturite 15 grains of the 
sulphate of quinia with two ounces of solution of ammonia, throw 
