80 Reviews — Jukes' Student's Manual of Geology. 



crust, earthquakes, volcanos and volcanic action, and on underground 

 changes eifected upon rocks ; these chapters are largely made up 

 from the previous edition. Surface agencies, including denudation, 

 also form part of the dynamical section, and these chapters are 

 chiefly furnished by Mr. Geikie. It is interesting to observe that 

 the purely geological portion of the volume, which in the previous 

 edition occupied 372 pages, now fills 475 pages. 



The paleeontological portion appears with little alteration, and has 

 been rather abbreviated by the omission of the parts relating to the 

 "Life of the Period." It does not seem to have enjoyed the same 

 amount of careful attention which has evidently been bestowed upon 

 the other parts of the book. More names are needed in the lists of 

 characteristic fossils, but these do not appear to have undergone 

 adequate revision. For instance, only two new fossils have been 

 added to the Cretaceous period, although many more have been 

 recorded, especially from the Upper Greensand. Notopocoi-ystes is 

 now called Palceocorystes ; ^ Ananchytes suhglohosus is now called 

 Holaster. Parasmilia is not named in the list. 



Prof. Huxley has furnished a new synopsis of the animal king- 

 dom, which appears in the Appendix. The table of the vegetable 

 kingdom was prepared by the late Dr. W. K. Harvey for Mr. Jukes. 



In the re- casting of the Devonian chapter, a great deal of the 

 matter from the second edition, relative to the Devonian question, has 

 been omitted. The two pages of the Appendix can hardly be said to 

 fairly represent this last labour of Mr. Jukes, upon which he had 

 expended an immense amount of both time and patient investigation. 



Yery valuable additions to this volume are the numerous references 

 to authorities where the student may find treated in detail the sub- 

 jects which are discussed in it. Strange to say, only a single re- 

 ference, however, is given to the works of the author. Prof. Jukes. 



We sadly miss the excellent glossarial index, a most useful feature 

 in the former edition of Jukes's Manual, as he attempted "to unite 

 to some extent an index, a dictionary, and a gradus." In the present 

 edition all explanations are left out, which can hardly be called an 

 improvement. We would advise the student to provide himself with 

 Page's Handbook of Geological Terms as a substitute, and he will 

 not then feel the loss. We heartily commend this third edition of 

 Jukes's Manual of Geology to all who are intending to become 

 geological students. 



II. — Geology of Oxford and the Yallet of the Thames. By 

 John Phillips, M.A., F.R.S., T.G.S., Professor of Geology in 

 the University of Oxford, etc., etc., etc. 8vo. pp. 524. 

 Illustrated by 17 Plates and 207 Woodcuts. (Oxford, 1871. 

 Clarendon Press.) 



THE volume before us — coming as it does from the pen of so able 

 a geologist and so eloquent a writer and scholar as Professor 

 Phillips — is interesting alike to the scientific man and the general 

 reader. 



