Sowerby' s Mineral Conchology. 583 



small quantity of blank space between the columns, there is a 

 portion of blank space about the edge of the sheet, and the 

 reverse page is wholly blank ; so that any one can, with minute 

 writing, notate to considerable extent upon this sheet. The 

 species are arranged in the order of the Linnsean system : it 

 is probable just in Dr. Hooker's series. 



Skepard, C. U., A. B., Lecturer on Natural History in Yale 

 College, Member of the American Geological Society of 

 France, &c. : Treatise on Mineralogy : Second Part, con- 

 sisting of Descriptions of the Species, and Tables illustra- 

 tive of their Natural and Chemical Affinities. With 500 

 woodcuts. In two volumes, 8vo, 631 pages. New Haven, 

 United States, 1835. 



This registering of the title of this work will serve to make 

 known the fact of its being extant : a critical notice may be 

 inserted in a future Number. 



Sowerby, James, F.L.S. G.S. W.S., &c. deceased : The Mi- 

 neral Conchology of Great Britain, or Coloured Figures 

 and Descriptions of those Remains of Testaceous Animals 

 or Shells which have been preserved at various Times and 

 Depths in the Earth. Continued by James D. C. Sow- 

 erby, F.L.S. &c. No. 105., August, 1835; containing a 

 Portrait of the late Mr. Sowerby, the Preface to the Gene- 

 ral Indexes, and the Systematical Index to the six Volumes. 

 Sold by the Sowerbies and Longman and Co., and Sher- 

 wood and Co. No. 106. is to include the rest of the in- 

 dexes : it is to be published in November. 



Extracts from the preface : — " The work was originally 

 planned to be arranged zoologically, so that, in the absence of 

 an index pointing out such an arrangement, it must be incom- 

 plete : this index would have been given, with another geolo- 

 gically arranged, soon after the conclusion of the sixth volume ; 

 but the author of that and the one preceding was unwilling to 

 adopt hastily any system which was then proposed, and even 

 now feels that his duty is very imperfectly performed. He 

 has adopted the system of Lamarck, as given by M. Deshayes, 

 and made only a few alterations, which seem to him to be 

 absolutely needful One advantage, and that a consider- 

 able one, in the system he has adopted, is its being nearly the 



one followed by most modern geologists The geological 



index will, in some cases, be found at variance with the former 

 text; where that is the case, the difference has arisen from 

 some discovered error in the locality given, or has been made 

 upon authority which cannot be questioned :. still, the author 

 fears many errors remain " 



