Geological Society of London. 367 



which is not enriched by a series of these American Survey Publica- 

 tions — while he might search through half the counties in the king- 

 dom before he could obtain access to a copy of the publications of 

 the Geological Survey of Great Britain. In early years, a wise and 

 well-judged arrangement was made by which such publications were 

 issued at an uniform rate, which was reasonable, and which brought 

 them within reach of most persons interested. But lately a new 

 system, so far as we can learn without any public sanction, has been 

 introduced, and all expenses whatever incurred in the printing, etc., 

 of a Report are put to the charge of that Eeport, and as only small 

 editions are printed, they naturally enhance the cost of each pamph- 

 let or volume. But in addition to this, not only is this charged at a 

 fixed rate per sheet or page, but the cost of every alteration is added, 

 and the public is made to pay for the incompetence or carelessness of 

 the editor, who, not knowing exactly what it is he wants, has the same 

 passages printed over again two or three times. Thus it happens, 

 that reports are saleable only at a price which perfectly forbids their 

 purchase. While the works are produced on paper more like what 

 is used for the columns of a halfpenny newspaper, than what would 

 be expected in valuable and costly scientific reports. And the illus- 

 trations are either of the poorest and worst executed kind, or are 

 so destroyed by bad printing on bad paper that they are simply 

 disgraceful. We are well aware that this is not caused by the 

 Officers of the Survey itself, and that, in fact, they suffer severely 

 by it and regret the result as much as the public at large, but the 

 facts are as stated. 



Nothing of this kind will be found in this Atlas of Colorado, the 

 paper is excellent, the printing is excellent, the execution is excel- 

 lent. T. Oldham. 



i^Ei^OE-TS j^is^iD :E>iaooE:EX)iisrc3-s. 



I. — Geological Society of London. — June 5, 1878. — John 

 Evans, Esq., D.C.L., F.R.S., . Vice-President, in the Chair. — The 

 following communications were read : — 



1. " On the Quartzites of Shropshire." By Charles Callaway, 

 Esq., M.A., B.Sc, P.G.S. 



In a former paper (Q.J.G.S. xxxiii. p. 652) the author indicated 

 that part of the so-called quartzites of the Wrekin are " Hollybush 

 Sandstone " ; in the present communication he shows that the whole, 

 both in the Wrekin and Church Stretton areas, are of Cambrian or 

 Precambrian and not of Caradoc age. 



In the Wrekin area the quartzites rest unconformably against the 

 ■volcanic axis in a nearly continuous band, dipping away from it at 

 angles of from 30° to 55°, their present position being due to its 

 elevation. The volcanic rock is a bedded Precambrian tufi", which 

 reappears in Lawrence Hill and the Ercal, also accompanied by 

 quartzites overlain by Hollybush Sandstone. Caer Caradoc belongs 

 to the same volcanic series, and the quartzites reappear on its S.E. 

 flank, overlain by Hollybush Sandstone containing Kutorgina cin- 



