Notices respecting New Boohs, 239 



therein as gradually subsiding — separates Chapter xviii., on the 

 general theory of wires naturally curved, from xiv. and xv., to 

 which it would seem more appropriately a sequel. 



In Chapter xix. the elementary and then the general thepry 

 of thin plates is entered on ; to be continued later in the con- 

 cluding chapter (xxiii.), treating of the important question of 

 the stability of elastic rods, plates, and shells — the intermediate 

 Chapters xxi., xxii., dealing with the general theory of thin elastic 

 shells and applications of the same. 



It will be apparent from the foregoing glance at the contents of 

 this treatise how wide a field it covers ; and it may be added that 

 where his plan and limits compel the author to exclude further 

 developments ample references are given to the memoirs wherein 

 they are to be sought. Frequent among these are references to 

 Lord Kelvin's Mathematical and Physical Papers, and to Lord 

 Kayleigh's, Prof. Lamb's, and Mr. Basset's papers in the Proceedings 

 of the London Mathematical Society ; also to Mr. Chree's in the 

 Transactions of the Cambridge Philosophical Society. References 

 to the sections on the subject of the treatise in Thomson and 

 Tait's ' Natural Philosophy ' and to Prof Pearson's exposition of 

 St. Yenant's w T ork occur frequently, it is needless to say. Nor is 

 Mr. Love himself only a judicious and careful compiler from the 

 work of predecessors and contemporaries ; his own original con- 

 tributions to the sum of knowledge gained for the subjects on which 

 he writes being considerable. A " Note on Kirchhoff's theory of 

 the Deformation of Elastic Plates " and an elaborate memoir of 

 52 pages (" really an attempt to construct a theory of the vibra- 

 tion of bells ") on the same problem appeared in the Transactions 

 of the Cambridge Philosophical Society and the Royal Society, 

 respectively, for 1888 ; and since that date his papers have 

 appeared in the London Mathematical Society's Proceedings at 

 frequent intervals ; while the present treatise is marked bv all the 

 thoroughness, accuracy, and candid confronting of difficulties 

 which have characterized those original essays. This is, in short, 

 a learned and valuable addition to the available text-books on 

 departments of the higher Applied Mathematics. 



Annals of British Geology, 1892. By J. F. Blake, M.A., F.G.S. 

 8vo. Pages i-xliv and ] -310, with 100 Illustrations. Dulau & 

 Co. : London, 1893. 



This is a careful and useful digest of the books, papers, and maps, 

 published during the year 1892, that relate to British Geology for 

 the most part, and to some extent to the G-eology of the Colonies 

 and of foreign countries. 



It is the third of a series, the first and second of which have 

 been noticed in the ' Philosophical Magazine' of March 1892 and 

 February 1893. " In this third volume," the author remarks, 

 " further changes of method have been introduced with a view of 

 meeting the expressed wishes and suggestions of subscribers. The 



