38 Reviews — Elementary Ckological Text Books. 



In the Memoir Messrs. Wood and Harmer give a general account 

 of the structure of the Coralline Crag, the Eed and Fluvio-marine or 

 Norwich Crags, the Chillesford beds, the Lower, Middle, and Upper 

 Glacial beds, Plateau gravel, and Post-glacial beds. The Bridling- 

 ton Crag is noticed as being probably posterior in age to the great 

 chalky or Upper Eoulder-clay ; and other deposits, not included in the 

 area comprised in the map, in which shells are noticed in the ' Crag 

 Mollusca,' as the beds at Kelsea Hill, Paull Cliff, March, and Hun- 

 stanton, and the Nar Brickearth, are noticed among the Post-glacial 

 formations. H. B. W. 



III. — Elementary Geology; A Course of Nine Lectures, specially 



ADAPTED FOR THE UsE OF SCHOOLS AND JuNIOR StUDENTS. By 



J. Clifton Ward, F.G.S. 8vo., pp. 282. (Triibner & Co., 

 London, 1872.) 



The Earth's Crust, A Handy Outline of Geology. By David 

 Page. Sixth Edition. 8vo., pp. 98. (Blackwood & Sons, 

 Edinburgh and London, 1872.) 



FIFTY years ago Geology was the pursuit rather of the man of 

 fortune than of the less favoured individual who had to struggle 

 for existence. Then it was a science more particularly of travel 

 than it is now; mineralogy was its constant companion, for palaeon- 

 tology was not very far advanced. Now the science has made such 

 progress that few men can be masters of it as a whole. Kailways 

 have furnished a cheap and ready means to gain a personal know- 

 ledge of all our British rocks; and those who have no time for travel 

 can aid the good cause by studying some of the many forms of life 

 that inhabited this earth in bygone times. We cannot wonder that 

 the science is a popular one ; for it can be studied perhaps with less 

 expense than most other sciences, and is probably as well adapted 

 as any for training the mind to those habits of reasoning which, as 

 Canon Kingsley has shown in his " Town Geology," are of so much 

 advantage to every one. 



Geology is now taught in our principal schools, and there is no 

 lack of text-books, elementary and advanced, to assist in diffusing a 

 knowledge of the science. 



Mr. Ward is a member of the Geological Survey of England, and 

 he gives us in a course of nine lectures a ^rerj good and readable 

 resume of the principal facts of geology. The physical geology 

 and geography is all we could desire in such an elementary work ; 

 the palseontological portion, or that part which treats of the series 

 of strata, with their organic remains, gives hardly sufficient informa- 

 tion as a text-book for schools, and it is not always so clear and 

 accurate as we could have desired. The illustrations might also be 

 improved, although they are no doubt sufficiently useful as diagrams. 



On the whole, we can recommend Mr. Ward's book as a good 

 introduction to more advanced works, and also as furnishing a 

 readable work for those who have only time or inclination to get at 

 the general idea of the science. His chapter on practical geology 



