J. Lawrence Smith on two New Minerals. 337 
of ammonia added to this solution demonstrates the presence of 
lime. Farther examination detected no other substance. 
The mineral dissolves readily in dilute acids and with violent 
effervescence, affording a yellow solution, that gives a yellow 
precipitate with ammonia and its carbonate, but the latter in ex- 
cess, redissolves most of the precipitate, and what remains is fou 
to be carbonate of lime. ‘The carbonate of ammonia solution 
When boiled redeposits a yellow precipitate. In a neutral solu- 
tion, sulphuretted hydrogen produces no precipitate, but the hy- 
drosulphate of ammonia furnishes one of a brown color, and the 
ferrocyanuret of potassium one that is reddish brown. | 
The above properties show the presence of water, carbonic 
acid, lime and uranium, farther examination gave no evidence of 
the presence of any other substance. 
The amount of this mineral in a state of purity was too small 
to allow me to make as minute a quantitative analysis as I 
should desire, but owing to the simplicity of its composition, the 
