210 



THE GEOLOGIST, 



over the collection in tlie Manchester Natural History ]Museum I find no sponge— 

 nor anything corresponding to my specimen, but I may have overlooked what I sought 

 for. If fossil sponges are known — which I should expect — in what book are 

 they described, or wliere shall I get information respecting them ? 2. Mr. Page, 

 in his Advanced Text-book, pp. 290-1, refers to the Clinometer and .Ineroid. Pro- 

 fessors are guilty of giving students too much credit in what they suppose them 

 to know, so I presume Mr. Page supposes the two instruments mentioned above 

 are well-known. Will some contributor to the Geologist describe the iustruuieuts, 

 and give a few hints as to the best mode of using them, or give reference to some 

 not very expensive book with the needed information ? 3. Is there any article 

 or treatise on Palmacites from which an amateur might gather the distinctive 

 features of the dilierent species ? 4. What is the Etymology of Ulodendron ? If 

 from vX't] and povSevS is the word vXrj used in a generic sense, as a forest-tree, or 

 has it some specific meaning ? I leave my enquiries to the kindness of yourself 

 and contributors to the Geologist — hoping they are not beneath a notice in your 

 * Notes and Queries.' — Yours, &c." 



Ferx Remains from Forest of Dean, from Saurcts, Gloucester. — We 

 acknowledge this communication, with pen-and-ink outlines of the specimens, from 

 which, they being without the slightest indication of structure, &c., we cannot 

 determine the species. From casts, or careful drawings, of specimens, we might 

 assist our correspondents ; but, even with the actual specimens before one, it is 

 very diificult, if not impossible, to determine specimens from fossil-leaves alone. 

 There are no other good or cheap works on fossils than those popular treatises by 

 Lyell, Mantell, Phillips, xinsted. &c., to which we have, in answer to other corre- 

 spondents, already referred. 



Geology of Ross. — " Sir, — Will any of your readers give me the names of 

 the localities in the neighbourhood of Ross, in Herefordshire, that possess interest 

 for the geological student. Will you also inform me the best method of 

 extricating the fossils from the rocks in which they are contained." 



Palatal Teeth of Fish, Bristol. — " Bristol Institution, April 10, 1858. — 

 Sir, — If your correspondent who signs ' W. S., Bristol,' will pay a visit to our 

 museum, I shall have much pleasure in showing him the collection of ' Palates ' 

 from the ^Mountain Limestone, and I shall be glad to assist him in naming the 

 ' twenty dilierent kinds ' which he has collected. I am, Sir, yours obediently, 



" Wm. Sanders." 



REPORTS OF THE PROCEEDCTOS OE GEOLOGICAL 

 SOCIETIES. 



Geological Society of London. — March 24. — 1. " On a protrusion of Silurian 

 Keck in the North of Ayrshire. " By J. C. Moore, Esq., F.R.S., F.G.S. 



'i'he author described the coast-section of a part of North Ayr, from Ardrossan 

 to Goldenberry Hill, north of Portencross Castle, altogether about five miles in 

 length ; and he showed that the red sandstones ( of Devonian age ) that succeeded 

 the r'.;iUi,ioasures of Ardrossan, from which they are cut olf by a tra^D-dyke, dip 

 !' for upwards of two miles, then form a low anticlinal, and are then 



short distance; after which they are abruptly succeeded by a con- 

 toned and arched mass of purple, green, and black schists of Silurian age. The 

 schists are immediately succeeded on the north by unconformable red sandstones 

 and conglomerates, dipping northward, cut through by greenstones, and apparently 

 belonging to a lower stage than that of the red sandstones of the south of the axis ; 

 sandstones similar to the latter succeed, with a conformable dip, and are traversed 

 by a porphyry which forms a massive covering above them, and constitutes the 

 pioturostiue hill of Goldenberry. 



The author remarked that an axis of elevation has disturbed the Old Red sand- 



