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TIIE GEOLOGIST. 



logy or palaeontology has yet to show, this is as valid an explanation of 

 the phenomena as that which, under the semblance of indefiniteness, is 

 carefully definite for a long time before Adam. If it is physically and 

 philosophically possible to intercalate all the epochs of man, shown in the 

 monuments of the globe itself, within the compass of the years assigned to 

 the same occurrences by the received interpretation of Scripture, my task 

 is done. I claim the verdict of ' Not proven ' on the issue raised." 



We do not side with Mr. Pattison's views, but we are willing to admit 

 that no one of his school has put forward on any occasion more sensible or 

 more critical objections than he has done in this unpretentious brochure. 



Descriptions of tivo New Genera (Trypanostoma and. Goniobasis) , and of 

 New Species of Unionidcs and Melanidce. By Dr. Isaac Lea. 



The enormous number of species in the genus Melania has made it de- 

 sirable, Dr. Lea thinks, to eliminate as many as possible by founding new 

 genera. The genus now proposed by him, Trypanostoma, will include all 

 the Melania? with an auger-shaped aperture. For those having usually a 

 slight thickening of the upper part of the columella and no callus below, 

 and which are also without the notch of Haldemann's genus Lithasia, to 

 ' which they are nearly allied, although subangular at the base, Dr. Lea 

 proposes the generic name of Goniobasis. 



M'Zeod's Wall-Map, England and Wales : No. 3, Geological. By Edw. 

 Weller, Esq., E.Gr.S. London: Longmans. 



The sheet-maps of the Greoksgtcal Survey, with their full details ac- 

 quired by actual investigation in the field by competent geologists, and 

 the general map produced by Professor Hamsay, the Local Director of the 

 Survey, from the official materials of his department, leave no excuse for 

 a bad geological map of England and Wales, nor much merit for producing 

 a good one. Notwithstanding these facilities, it is usual to find publish- 

 ers producing geological, or rathsr ungeological, maps of the vilest charac- 

 ter, — inaccurate in delineation, erroneous in geological subdivisions, and co- 

 loured fortuitously by some mere print-dauber. The wall-map before us, 

 sent for our criticism by Messrs. Longman, however, deserves every praise. 

 It is of convenient size — 4 ft. 3 in. by 3 ft. 3 in. — small enough to hang on any 

 ordinary school-wall or library without inconvenience, large enough for the 

 particulars to be seen at a considerable distance ; it is accurately delineated, 

 and nicely coloured. The details inserted are quite sufficient for ordinary 

 purposes, as is also the strati graphical section of subdivisions, which acts 

 as a key to the colouring. Altogether we can conscientiously recommend 

 it as the best map of the kind extant. No other for scholastic purposes 

 can be compared with it at all. In the copy we have received, two or 

 three patches are omitted to be coloured, an oversight which should be 

 seen to by the editor or publisher, as such omissions, which occur through 

 the stupidity and carelessness of the colourers, are detrimental to the high 

 character the map ought to possess with the public. 



