462 Scientific Intelligence. 
6. Memoirs of the Geological Survey of India. Paleontolog- 
ica Indica.—Published by order of the Governor General of In 
dia in Council, under the direction of Thomas Oldham, LL.D., 
Superintendent of the Geological Survey of India. Vol. i, Parts 
2,3 and 4 (1875), contain the continuation of the memoir on the 
pure, without admixture with potash salts. The maximum thick. 
ness of the salt rock is not less than 1,230 feet. It is associated 
contain a brief Annual Report, together wit 
Geology of Sind, by Wm. T. Blanford, the rocks of which, thus 
far observed, range from the Infra-nummulitic, supposed to be 
Lower Eocene to the Pliocene and more recent. : 
7. Detritus of Rivers. —The Liverpool Geological Society 
held its first annual meeting of the session on the 10th instant, 
when the retiring president, Mr. T. Mellard Reade, C.E., F.G.S, 
delivered his annual address. The subject was an interesting one, 
being a calculation of the amount of solid matter removed annu- 
ally from the surface of England and Wales in solution, in rain, 
. 
the age of sedimentary deposits, the calculations taken, together 
with the amount of matter annually brought down in river water _ 
