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by Mr. Maw, published in the " Quarterly Journal of the 

 Geological Society " for November, 1868. The Lode of copper 

 has its sides commonly bounded by oxide of iron, in connection 

 with which, curiously marked bands of the same mineral 

 variegate the surface of the yellow sandstone with singular 

 regularity. It seems due to galvanic action, causing the 

 iron contained in the Keviper to arrange itself in these parallel 

 bands. Some very beautifully illustrative examples were here 

 obtained. The next point of interest was the well-known 

 Grinshill Quarries, famous not only for the excellence of their 

 building-stones which are unsurpassed for beauty of colour, 

 for texture, and endm*ance; but to Geologists of special interest, 

 as having yielded in greater abundance than any other locality, 

 the bones, and supposed footprints, of the BhyncJiosaurus, a 

 curious beaked Saurian of peculiar character, having an 

 apparent connection with the Chelonians or Tiu'tles, and re- 

 stricted to. the Keuper. The quarries exhibit a magnificent 

 section of the *^ Waterstones," some 80 feet in thickness, 

 capped by Lower Keuper Marls, and resting upon the red 

 *' Banter" beds. These beds occur in successive rolls as far 

 as Frees, where they are succeeded by the " Ehoetic " and the 

 " Lower Lias," up to the "Marlstone" of the "Middle Lias." 

 From this point (at Frees) the Lias would not again be met 

 with for forty or fifty miles ; yet, it must once have been 

 continuous over the whole of the intermediate area, and have 

 extended some 1,500 feet above the present level of the Grins- 

 hill series. What an idea does this convey of the gigantic 

 scale upon which denudation has been carried on ! And how 

 does the mind of man recoil when it endeavours to grasp the 

 idea of time, in connection with events of such magnitude and 

 dm*ation! The Geologists found ample matter of interest in 

 some slabs preserved by the quarrymen on which, upon the 

 ripple-marked surface of the ancient Keuper beach were 

 stamped the tracks attributed to the BhyncJiosawus, while the 

 casts of the rain or hail-drops stereotyped for ever in the rock, 

 bore witness to the fact that in those long distant epochs the 

 rain fell, and the winds blew, and the atmospheric conditions 



