Larkin's Crystallography. 145 



mensurable, except in one instance, on which account theyjnake 

 a very striking contrast with the natural series, whicli are all com- 

 mensurable. He afterwards describes five distinct dodecahedrons, 

 which all admit of indefinite variation, and which, with the two 

 before described, make seven ; the whole of which are shown to 

 be singularly related with the cube. The descriptive part is fol- 

 lowed by a series of demonstrations contained in fiftv-three theo- 

 rems, concluding with an Appendix, by Dr. Koget, containing a 

 demonstration of the relations subsisting between the numbers of 

 the artificial series, and likewise between their faces and their 

 axes The whole is illustrated bv four plates, enuraved in a su- 

 perior manner by Mr. and Miss Lowry ; the third plate is re- 

 markabiv wpII Executed, and is a flattering specimen of that voung 

 ladies abilities. 



Upon the whole, the work will be found of great service to pre- 

 pare tlie mind for the study of crvstailograpliy ; and at the same 

 time, highly -nteresting to the mathematician. Indeed it is the 

 only work in the English language in which the various proper- 

 ties of the geometrical solids are particularly described; on which 

 account it cannot fail to be acceptable. 



Lately puuli^hed, 



A Dictionary of Natural History ; or Complete Summary of 

 Zoology, embellished with 140 interesting Subjects. 9*. coloured 

 125. 



An Elementary Treatise on Mecham'cs, Vol. 1, containing Dy- 

 namics. Bv W, Whewell. Svo. 15^. 



An Analytical Essay on the Construction of Machines, illus- 

 trated by 13 lithographic prints. 4to. \Ss. 



A Historical Map of Palestine, or The Holy Land ; exhibiting 

 its geographical Features, and those Names of Places which ac- 

 cord with the Scripture Narrative, Size 40 inches by 27|. 11. I8s. 



Travels in Nubia and the Interior of Eastern Africa. By J. L. 

 Burckhardt. With a Life and Portrait of the Author. 4to. 2/. Ss. 

 — This is a very interesting work. 



Iinlex Testaceologicus ; or, A complete Catalogue of Shells, 

 Briti-hand Foreign, arranged according to the Linmean System, 

 witli the English and Latin Names, References to Figures, and 

 Places where found. By W. WooJ, F.L.S. lis. 



The Natural History of British Quadrupeds, with coloured Fi- 

 gures, accompanied by scientific and general Descriptions of all 

 Vol. 55. No. 2G2. tU. 1820. K the 



