[319]

Areas of Formation in Prof H. D. Rogers Map of U. States

Coal & Lime Co 12.25 grain

Metamorphic & Plu 9 gr

(Excluding semi-metamorphic)

10° of Lat. square 17.7

by Cutting out & weighing Paper

(22)

[319v]

293 A.

(Mr Hopkins in commenting on the foregoing views infers that I believe that extensive formations have been entirely worn away & have thus become lost; but my remarks refer exclusively to littoral & sub-littoral deposits accumulated near the shores of a rising area, being worn away as soon as brought up weathers to coast action my remarks do not apply to the of extensive shallow sea-bed, as between the Malay Isld. I have said nothing on the certain remnant of foundation, when fairly upraised & forming part of a large area of dry land primordial of the globe. But as this subject has been breached, let me remark that few except those who look below we see a primordial state of a globe ask, does any one suppose that granite & other plutonic rocks have crystallized & become solidified or that sedimentary strata have become metamorphosed into gneiss, mica-schist & in an uncovered condition: will not every one admit that rocks of these natures, was once covered up by a mantle of overlying strata, when kept to heat in & served as a weight during