572 Reviews — LyelUs Principles of Geology, 



the remains of man and his works which belong to the ages of 

 Bronze and Stone. Implements of the Neolithic Period — of the 

 antecedent Eeindeer Period — and lastly, of the Paleolithic Period, 

 are mentioned. The position of flint tools of Pala3olithic age in the 

 drift of the southern coast of Hampshire and the Isle of Wight, is 

 explained. 



At p. 564, the age of the pottery in the upraised marine strata 

 near Cagliari, on the south coast of Sardinia, is discussed. 



The 49th chapter is reprinted from corresjDonding or concluding 

 chapter of the ninth edition, with some corrections in the nomen- 

 clature of corals supplied by Dr. Duncan, and some observations at 

 p. 580 on the depths at which different genera grew. Allusion is 

 also made, p. 609, to the large quantity of limestone in the oldest or 

 Laurentian series of rocks in Canada. 



Keferring to the marked change which has taken place in the 

 opinions of Sir Charles Lyell and other eminent geologists, on the 

 subject of the Origin of Species by Natural Selection, Dr. Hooker 

 observes, in his inaugural address, as President, at the opening 

 meeting of the British Association for the Advancement of Science 

 (Norwich, August 19th, 1868) : — '' On the score of Geology, the ob- 

 jectors rely chiefly on the assumed perfection of the geological 

 record; and since almost all who believe in its imperfection, and 

 many of the other school, accept the theories both of evolution and 

 natural selection, wholly or in part, there is no doubt but 

 Mr. Darwin claims the great majority of geologists. Of these, 

 one is in himself a host, the veteran Sir Charles Lyell, who, after 

 having devoted whole chapters of the first editions of his ' Prin- 

 ciples ' to establishing the doctrine of special creations, abandons it 

 in the tenth ; and this, too, on the showing of a pupil, for in the dedi- 

 cation of his earliest work, 'The Naturalist's Voyage,' to Sir C. 

 Lyell, Mr. Darwin states that the chief part of whatever merit him- 

 self or his works possess, has been derived froin studying the 

 ' Principles of Geology.' I know no brighter example of heroism 

 of its kind, than this, of an author thus abandoning, late in life, 

 a theory which he had for forty years regarded as the very founda- 

 tion of a work that had given him the highest position attainable 

 amongst scientific writers. Well may he be proud of a superstruc- 

 ture, raised on the foundations of an insecure doctrine, when he 

 finds that he can underpin it, and substitute a new foundation : 

 and after all is finished survey his edifice, not only more secure, but 

 more harmonious in its proportions, than it was before ; for assuredly 

 the biological chapters of the tenth edition of the ' Principles ' are 

 more in harmony with the doctrine of slow changes in the history of 

 our planet, than were their counterparts in the former editions." 



II ESSAI DE G OLOGIE ET DE PaLEONTOLOGIE AvEYRONNAISES, 



par p. Reynes. Paris, 1868. 



THIS deferred publication of M. Eeynes is of some geological 

 interest. Originally intended (1864) for the journal of a 

 Scientific Society, it is now printed separately, and is a valuable addi- 



