Reviews—Bristow’s Geological Map of England 427 
room for doubting that this Gulo luscus was obtained from a bed 
low down in the “‘ Pre-Glacial Forest Bed Series” near Mundesley. 
EXPLANATION OF PLATE. XV.! 
Guto tuscus, Linn. 
All the figures are natural size, and their correctness is guaranteed by their being 
drawn from nature by my friend and colleague Mr. G. Sharman. 
Fie. 1. Portion of a left ramus of mandible, from the ‘‘ Forest Bed’ of Mundesley, 
outer side. 
. Ditto, inner side. 
. Ditto, viewed from above. 
. Left ramus of a recent specimen in the Museum of the Royal College of 
Surgeons, outer side. r 
. Inner view of portion of same. 
. View of same trom above. 
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REVIEWS. 
> 
Grotocican Mar or Enenanp anp Waters. By Henry W. 
Bristow, F.R.S., F.G.8., Director of the Geological Survey of 
England and Wales. (Letts, Son, & Co.) 
GEOLOGICAL Map at the cost of about 243d. naturally creates 
ug such a feeling of scepticism that we would recommend our 
readers to purchase Part 4 of Letts’s Popular Atlas (price 7d.), 
which includes: 1. A Geological Map of England and Wales; 2. A 
General Map of Africa; and 3. A General Map of the Austrian and 
German Empires. The size of the maps is about 1 ft. lin. by 1 ft. 
4in., and all are printed in colours. Twenty-two geological 
divisions are shown in Mr, Bristow’s map, and although the printing 
is not such as would satisfy the mind of the critic, yet when we 
consider the price, we can but marvel at the production. The beds 
least clearly defined are those between the Coal-measures and the 
Oolites. The Permian and Trias are often so difficult to distinguish 
in the field, that a blending of them on the map does not matter ; 
but the Lias in the Midland Counties, as shown on the map, is not 
sufficiently distinct at a glance. The map, however, improves upon 
acquaintance, and it really is an old friend in a new guise, being 
founded on the map published under the Superintendence of the 
Society for the Diffusion of Useful Knowledge. The original 
edition was, we believe, issued in 1884—being then based chiefly 
on the works of William Smith, of Conybeare and W. Phillips, 
and of John Phillips. A newer edition by Sir Roderick Murchison 
was prepared in 1843 by 8. P. Woodward, and this included 
the work of Sedgwick, Murchison, and De la Beche in Wales 
and the West of England. From time to time improved editions 
of Murchison’s map were published, the revisions being chiefly 
those due to the progress of the Geological Survey, to which Mr. 
Bristow himself has in no small degree contributed. The 
present edition includes important revisions of the map in parts of 
Devonshire and in the northern counties of England, and of the 
numerous marginal notes which furnish many local details of 
geological interest. All the leading railways are very prominently 
shown. 
1 The Plate will appear in the October Number. 
