410 3 Scientific Intelligence. 
By a dry distillation, it evolves carbonate of ammonia (CO, 2NH,), 
without a trace of water, and a residue of fused cyanate of baryta re- 
mains. By the action of acids it evolves pure sania acid gas, with- 
out the least odor of cyanic acid, and the liquid contains urea with but 
a trace of ammonia. [ts solution does not immediately precipitate salts 
of silver or lead; but after some time, with the latter, it causes a pre- 
cipitate of pure carbonate of lea 
When the baryta salt is triturated with a solution of sulphate of soda, 
the allophanate of soda is formed, which is separated in small prisms 
on the addition of alcohol. The same salt is obtained when the cyanic 
ether is dissolved in an alcoholic solution of soda. By the action of 
nitric acid, it is decomposed, evlone pure carbonic acid gas, and de- 
positing erystals of nitrate of ure 
The analyses of the baryta ay correspond poet, with the for- 
mula (C, H, N, O,, BaO), or in Gerhardt’s notation (C, H, BaN. 903); 
the normal ‘Species, allophanic acid will then be (C, N, 0, » kill 
contains ne elements of two equivalents of cyanic “acid pit one of 
water (2CHNO > 0); and, as M. Gerhardt remarks, corresponds 
to the genus thiocarbamate C, H, N.S, (h drosulphuretted hydrosul- 
phacvans acid of Zeise), produced by the action of ammonia upon 
sulphuret of carbon. 
iebig and Wahler have also studied the action of cyanic acid 
n aldehyde. When the cyanic vapors are passed into dry aldehyde 
feccninded by ice, the liquid enters into ebullition, evolves carbonic 
The trigenic acid ise by heat and then PRONE emitting alkaline 
vapors which have the odor of quinoleine, and some reactions whic 
the authors have awed with the condensed Fl wis , have induced 
them to conclude that this alkaloid is really formed; cyanuric acid is 
evolved at the same time 
Analysis 2,8 for the € composition of this acid, the formula ec 
-. a precipitate of trigenate a silver “CH OAEN. 0); this is 
ced ed by fonts actanine. and evolving vapors which have ao 
r of quinolein 
~ Acetone Sicoard to be acted upon by the cyanic vapors, in a manner 
similar to alcohol and aldehyde, but the products of the action have not 
yet been a aed T. 8. H. 
recently announced by M. Verdeil. The method of M. Plattner whet 
described in 1845, is as follows. The bile previously dried 
