304 THE CANADIAN NATURALIST. [Vol. vii> 



those in Nova Scotia. The plants contained in the upper de- 

 posits were compared with those of the European Permian, and 

 a correlation was shown to exist between them, so that it becomes 

 a question whether this series was not synchronous with the 

 lower part of the Permian of Europe, although in this district 

 there is no stratigraphical break to establish a boundary between 

 Carboniferous and Permian. The author therefore proposes to- 

 name these beds Permo-Carboniferous, and regards them as to- 

 some extent bridging over the gup which in Eastern America 

 separates the Carboniferous from the Trias. 



Dana's Manual of Geology. — The second edition of 

 Prof. J. J). Dana's excellent Manual of Geology has just been 

 published. The first edition made its appearance in 1862,. 

 During the twelve years that have elapsed, numerous and im- 

 portant discoveries in Geology and Palaeontology have been 

 made, especially on this Continent. The results of these are 

 embodied in this new edition, which thus gives a full exposition 

 of the science as it stands at the present day. 



The Manual is an octavo volume of 828 pages, illustrated by 

 1122 excellent wood engravings of fossils, sections and geological 

 phenomena, beoides a physiographic chart of the world. It is 

 divided into four parts, 1. Ph\fiographic Geology; 2. Litholo- 

 gical Geology ; 3. Historical Geology; and 4. Dynamical Geo- 

 logy. Each of these four subjects is thoroughly explained and 

 illustrated. Of these the third part, the most important, occu- 

 pies 456 pages, and is copiously illustrated by groups of the 

 characteristic fossils of all the formaLans. Among these will 

 be found a large number of the principal organic remains of 

 our Canadian rocks. Such a book as this will be found exceed- 

 ingly useful to those who do not intend to follow Geology tis a 

 profession, but still are desirous to acquire by private study 

 such a general idea of the principles of the science as every 

 well-informed man should be jiossessed of. It contains in a 

 condensed form the substance of a whole geological library. 



Its value to the college student is too widely known to need 

 a notice here. One of the most interesting illustrations is the 

 frontispiece, representing the fossil man of the early stone a^e, 

 just as he lay during his long sleep for thousands of years in the 

 Cave of Mentone. b 



Published July 11th, 1874. : 



