Poynting to our present state of knowledge with respect to a very
difficult subject.... Remarkably has Newton's estimate been verified by
Prof. Poynting."--_Athen?um._
* * * * *
~Griffin's Geological, Prospecting, Mining, and Metallurgical
Publications.~
For Works on CHEMISTRY and CHEMICAL INDUSTRIES see p. 69.
PAGE
Geology, Stratigraphical, R. ETHERIDGE, F.R.S., 52
" Physical, PROF. H.G. SEELEY, 52
" Practical Aids, PROF. GRENVILLE COLE, 53
" Open Air Studies, " " 19
Griffin's "New Land" Series, ED. BY PROF. COLE, 54
Prospecting for Minerals, S. HERBERT COX, A.R.S.M., 55
Food Supply, ROBT. BRUCE, 55
New Lands, H.R. MILL, D.SC., F.R.S.E., 54
Building Construction, PROF. JAMES LYON, 54
Ore and Stone Mining, PROF. LE NEVE FOSTER, 56
Elementary Mining, " " 56
Coal Mining, H.W. HUGHES, F.G.S., 56
Practical Coal Mining, G.L. KERR, M.INST.M.E., 58
Elementary " " " 58
Electrical Coal Mining, D.
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