200 
THE GEOLOGIST. 
logy or palcEontology 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 befbre Adam. If it is physicall}'- 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 ' IS^ot proven ' on the issue raised." 
We do not side with Mr. Pattison's views, but we are wiUing 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 two New Genera (Trypanostoma and Goniohasis), and of 
New Species of Unionidce 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 Melanise 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'Leod's Wall-Map, England and Wales : No. 3, Geological. By Edw. 
Well er, Esq., F.G.S. London: Longmans. 
The sheet-maps of the Geological Survey, with their full details ac- 
quired by actual investigation in the field by competent geologists, and 
the general map produced by Professor Eamsa}^, 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. JSTothwithstanding these facilities, it is usual to find publish- 
ers producing geoloj^ical, or rath3r 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 acta 
as a key to the colouring. Altogether we can conscientiously recommend 
it as the best map of the kind extant, x^o 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. 
