116 Scientific Intelligence. 
ry forward sand, at another gravel, &c., are evidently fallacious, 
as the important condition, of the smooth or rough configuratio 
of the bottom, is not taken into ttle account. ‘The roblem i 1S 
one of great difficulty, requiring an accurate determination of the 
velocity at the bottom and sides of the stream, when in ordinary 
cases the slow transporting action is in progress, and this velocity 
= is well known, differs from that of the axis of the stream and 
m the average speed of the whole mass, which is the datum 
asa sought by the engineer. The investigation of the sub- 
ect systematically, was urged by Prof. Rogers as of fundamental 
‘iiterent in geological as well as hydrographical science, and he 
hoped that ere long the Association would institute a series of 
researches with that view. 
14. Fossils in the White Mountains.—Prof. H. D. Rogers 
stated to the Association, that on a farther examination of his s 
cimens from the White Mountain gap, he and his brother had 
satisfied themselves that the supposed fossils, which they had an- 
nounced as seagpenes there oy them, prove not to be fossils.* 
SCIENTIFIC INTELLIGENCE. 
I. Cuemistry AND, Puysics. . 
Sas 2 some New Compounds of Phisphipig 2 by A. W nrz, (Compt. 
Rendus, Feb., 1847.)—When the chlorosulphuret of Serullas, PCI, 
is digested in a water-bath with an excess of solution of soda, 
ually dissolves, and the liquid on cooling deposits crystals of a tiew sat 
which M. Wurtz designates as the sulpho-phosphate of soda. Its 
position is such that it may be viewed as the ordinary tribasic phoetiath 
of soda, in which two equivalents of oxygen are replaced by sulphur. 
he oxyphosphate being PO,, 3NaO-+-24aq, or according to Gerhardt’s 
O+24aq, 
Sas 
notationt PO, (Na,) -+-12aq, the new salt is PO,S 
=PO, 8, (Na Na mS 12aq. Like the common phosphate it is very soluble, 
crystallizes in large tables which effloresce in dry air and have a 
strongly alkaline reaction. s 
hlorine and nitric acid decompose the solutions of the sulpho-phos- 
phates with the formation of phosphates, while sulphur separates; the 
sulpho-phosphoric acid has not been isolated. When set free by sul 
phuric acid, its solution is decomposed by a gentle heat into phospho- 
ri¢ acid and sulphuretted hydrogen, PO, S(H,)+H, O=PO, (Ha) 
+H, 8. 
* See this Journal, ii ser., vol. i ti -—While at the gap the past summer, 
ee ambiguous appearances were observed in the slate near the Willey — 
resen ling or cla fossils. After sole ‘search they were found to be apne 
andalusite i tered by the 
