428 Scientific Intelligence. 
18. On dig al. Skala —Reryno1ps has succeeded in isolating 
the sulphur compound corresponding to urea, by heati ting ammo- 
nic galpbooyauate to to 170° C. in an oil bath for two hour My 
lution in water and crystallization, orthorhombic ‘aia were ob- 
eines mane were not deliquescent, were iia d soluble in aloatil 
water, sparingly so in ether, and which yielded on analysis the 
reams of i urea, (CS)H,N, ; its derivatives sei its 
rational constitution.—/J._C. hh. Soc. 5 wed. 1 . FB 
Ii. GEOLOGY. 
1. Ona a ttiege Phosphate ep the island of Redonda, W.L; 
by Cuartes Urnam Suuparp.—This substance has lately been 
brought to my antioe by receiving through Messrs. Willis and 
Chisolm of this city, a few pounds of it, pen them by Mr. Crich- 
ton of Baltimore, the proprietor of the is 
ineralogical chat 
white in spots. H. 3-5-4, sp. gr. 1 “90-2°07. Fracture even, sub-con- 
fetes to cary brittle, luster dull, The white and earthy va- 
ed. 
Choeuscoal no beri the bia pipe, te white at 
first, and then becomes rusty, without Baas: The flame ar 
the ma i 
and pa i aohrcn . gle effected in the strong “cs 
and ig Solutions are turbid with flocculent vie Ammonia 
rium; in the former case, er the phosphate of lime, and the latter, 
of the phosphate of baryta,—showing the mineral to be unusually 
rich in phosphori 
On analysis the slew» results were obtained : 
