304- Notices respecting New Books. 



Here Z stands for zenitli. 

 N ,, ,, nadir, 

 e, \y, n, s, east, west, north, south. 

 P M T denote faces, p, m, t, axes. 

 And in p. 2 of the first part we find that the subscript indices, 

 X, V. z, imply unknown or variable axes. 



The indices representing /;o?(7e;-s of the quarters of the compass are 

 thus explained In p. 24 of Part I. : 



" In Phillips's Mineralogy, p. 174, there is a figure of a crystal of 

 Fluorspar, which has 32 vertical planes, the arrangement of which is 

 as follows, taking the nw quadrant as an example : 



n n^w n'w n-w mv uW^ nw'' \wx* w 



M, MT:^, UTX, MT4-, Rfr, M+T, M^T, M^t^T. T. 



" The signs +, +, 4I)., in all these symbols, indicate the great, 

 o-i-eater, and greatest distance of the poles of the axes referred to, 

 while the figures 2, 3, 4 indicate the great, greater, and greatest 

 proximity of the poles to whose symbol they are added." 



It would have been more satisfactory to us to have found occasion 

 to commend this performance, instead of regretting as we do that so 

 much time and labour should have been employed upon a system so 

 little inviting in its notation, and affording so small a chance of 

 finding readers. *** 



Elements of Chemistry, including the most recent discoveries mid ap- 

 plications of the Science to Medicine and Pharmacy, and to the 

 Arts. By" Robert Kane, M.D., M.ll.T.A., Professor of Natural 

 Philosophy to the Royal Dublin Society, and of Chemistry to the 

 Apothecaries' Hall of Ireland, &c. Part I. Dublin, 1840, 8vo, 

 pp. 356, with 120 we.od-cuts. 



The following is an analysis of the first part of this work. 



Introduction. — Objects, Utility, and Origin of Chemistry. 



Chapter I. Of Gravity and Cohesive Forces as c.'iaractekizixg 

 Chemical Substances. — Specific gravity of Liquids, Gases and Solids. 

 Constitution of Matter. Infinite Divisibility. Ultimate Particles of Matter. 

 Molecular Constitution. States of Aggregation. Limits of Cohesion. 

 Capillarity. Elasticity of Gases. Correction for Pressure. Liquefaction 

 of Gases. Solubility- Phasnomena of Solution. Formation of Crystals 

 by Fusion and Solution. Dimorphism. Crystallization. Primary and Se- 

 condary Forms of Crystals. Systems of Crystallization. Regular System. 

 Hemihedral Forms. Riiombohedral System. Square, Right, and Oblique 

 Systems. Doubly Oblique System. Pseudomorphism. Forms modified 

 by Foreign Bodies. Isomorphism. Goniometers. 



Chainer II. Of the Properties of Light as characterizing Che- 

 mical Substances. — Simple Refraction. Double Refraction. Crystalline 

 Systems. Decomposition of Light. Prismatic Colours. Analysis by 

 Absorption. Natural Colours of Bodies. Polarization of Light. Action 

 of Crystallized Bodies on Polarized Light. Crystalline Systems known 

 by Polarized Light. Macled Crystals. Circular Polarization. Rotative 

 Power of Liquids. Plagihedral Crystals. Wave Theory of Light. Inter- 

 ference of Light, rbosphorcscence. Chemical Agencies of Light. Che- 

 mical Rays in the Spectrum. 



