MA THEM A TICS. 



taJ ^^^^ 



'^'''' of the,, 

 ns, 



d for the Use 

 '^^ Svo. cloth. 



)NS. With 

 r the Use of 

 and enlarged. 



ied into num- 



^(rnitioft of tk 



: of the air on 



^^; Theory 4 

 of the motion 



ssion of ^^f 

 usical souni\ 



nts of 

 ntioftl 



On i^' 



4 heari^S' 

 the U^^ 



of 



? 



/// 



e- 



.jc0ii^^^^' 



'^^^ as having 



"M operations 



This theory 



ci of the most 



include those j 



investigations 

 en observed. 





3 



with philosophical accuracy^ only in its connection with iron and 

 steely and in the inftttence excited by the earth as a whole^ the 

 accurate portions of this work are confined to the investigations con- 

 nected with these ductals and the earth. The latter part of the 

 worh, however, treats in a more general way of the laws of the 

 connection between Magnetism on the one hand and Galvanism 

 and Thermo- Electricity on the other. The work is divided into 

 Twelve Sections, and each section into numbered articles, each 

 of which states concisely and clearly the subject of the following 

 paragraphs. 



Ball (R. S., A.M.)— EXPERIMENTAL MECHANICS, A 



Course of Lectures delivered at the Royal College of Science for 

 Ireland. By Robert Stawell Ball, A.M., Professor of Applied 

 Mathematics and Mechanics in the Royal College of Science for 

 Ireland (Science and Art Department). Royal 8vo. i6^. 



The authof^s aim in these twenty Lectures has been to create in the 

 7nind of the student physical ideas corresponding to theoretical laws, 

 and thus to produce a work 7vhich may be rega^^ded either as a sup- 

 plement or an introduction to manuals of theoretic mechanics. To 

 realize this design, the copious use of experimental illustrations was 

 necessary. The apparatus used in the Lectures and figured in the 

 volume has been principally built 7ip from Professor Willises most 



r 



admirable system, Ln the selection of the subjects, the question oj 

 practical titility has in 7nany cases been regarded as the one of para* 

 mount importance, and it is believed that the mode of treatment 

 ivhich is adopted is more or less original. This is especially 

 the case in the Lectu7^es relating to friction, to the mechanical 

 powers, to the strength of timber and structures, to the laws of 

 motion, and to the pendulum. The illustrations, drawn from 

 the apparatus, are nearly all original and are beautifully exe* 

 cuted. ^^ Ln our reading we have not met zvith any book of the sort 

 in English,^^ — Mechanics' Magazine. 



Bayma.— THE elements of molecular mecha- 

 nics. By Joseph Bayma, S.J., Professor of Philosophy, 

 Stonyhurst College. Demy 8vo. cloth, los, 6d: 



Of the tzvelve Books into zvhich this treatise is divided, the first 

 and second give the demonstration of the principles which bear 

 directly on the constitution and the properties of matter. The next 



A 2 



