Reviews— Grethie’s Geological Map; Symonds’ ‘ Old Bones.’ 125 
present two varieties, coarse- and fine-grained, in close proximity, 
as in many other parts of the world (as noticed by Dr. Brassy, 
Gro. Maa. No. IV. p. 158). Probably the structure of this slate 
and granite country would be better understood if looked at with an 
eye to great crumplings, pressure, and metamorphism, rather than to 
the presumed eruptive condition of the granite. Prof. How’s Notes 
on the Economic Mineralogy of Nova Scotia, Part I., relate to some 
hematitic and titaniferous iron-ores. The results of the two visits 
of Exploration made by some of the Members of the Institute to the 
Kitchen-middens at St. Margaret’s Bay and Cole Harbour form an 
Appendix to the Institute’s ‘Transactions, Part I. 
OUTLINES OF THE GEOLOGY OF THE British IsLEs, TO ACCOMPANY 
THE GrEoLocicaAL Map. By ARcHIBALD GEIKIE, F.R.S.E., F.G.S. 
8vo. 1864. Edinburgh: JOHNSTONE. 
apes handbook, explaining a Geological Map of the British 
Isles, briefly describes the various strata, and their arrangement 
under different forms of ground, and has three divisions; namely, 
Ist, under ‘ England’ (which ought to be ‘England and Wales’); 
2nd, ‘Scotland; and, 3rd, ‘Ireland;’—a very fit arrangement, 
because, though some of the rocks and strata are necessarily treated 
of over again, yet their local differences are thus specially noticed, 
and their relations shown. An introductory portion gives a general 
résumé and table of our sedimentary strata, with brief remarks on 
igneous and metamorphic rocks. The body of the work consists of 
a carefully condensed account of the different Geological Groups in 
the three Kingdoms, with short notices of the several contempo- 
raneous volcanic rocks. We miss, however, some notice of the 
Rhetic group—well represented as it is at Exmouth in England, 
Penarth in South Wales, Linksfield in Scotland, and Lisnagrib in 
Ireland. 
Ten well-chosen illustrative diagrams are given as woodcuts; and 
the five sections engraved on the map are well described in the later 
pages of the book, as showing the relations that the different stratal 
series bear to each other in bold stretches across different parts of 
the British Isles. Limited groups of Fossils, characteristic of the 
different Systems, and selected from published works, are also 
engraved on the Map; and notes of local peculiarities are frequent 
at the margin of the land. The Map is colour-printed with heavy 
tints. 
Oxp Bonss; or, Notes ror YOouNG NATURALISTS, ON VERTEBRATE 
ANIMALS, THEIR Fossit Preprecessors AND ALLies. By the 
Rev. W. S. Symonps, F.G.S., &c. 2nd Edit., 8vo. London: 
Harpwicke. 1864. 
WE are glad to see that the Second Edition of this work has 
been called for by the Public, and that the Author having 
made many additions and improvements, the Publisher still issues it 
at a low price, so that it can be widely spread among students both 
