128 KEVIEWS. 



tion about a country close to our shores, and respecting which there is so little 

 actually known on this side of the Irish Channel, and our interest is consider- 

 ably increased by finding that these Lake dwellings were in use in Ireland 

 down to a much later period than in other countries — in Switzerland, for 

 example. One is mentioned in the County of Derry as inhabited as a fortress 

 in 1643. 



The book is written by one who evidently took pleasure in his work, and 

 who by culture and observation was well fitted for the task. It is extremely 

 well illustrated. 



It is difficult to select any one chapter of greater interest than another in a 

 book like this, which is all interesting ; but we found most attractive that part 

 at the beginning which treats of cannons and weapons belonging to the Lake 

 dwellings, and that other part at the end of the book which is entitled 

 "Historical Notices of Crannogs." The number of Lake dwellings in Ireland is 

 given as two hundred and twenty-one, but this must be under the mark, as 

 there is one not noticed near Barnesmore, in county Donegal, where was 

 found the remains of a man dressed in skin. We commend the book to the 

 public. 



A Treatise on Analytical Geometry of the Point, Line, 



Circle, and Conic Sections; containing an account of its most recent exten- 

 sions, with numerous examples. By John Casey, LL.D., F.R.S. Crown 8vo, 

 pp. xviii, — 331. (Dublin : Hodges, Figgis and Co. London : Longmans, 

 Green, and Co. 1885.) Price 7s. 6d. 



In this work the author gives a comprehensive account of the Analytical 

 Geometry of the Conic Sections, including the most recent additions to the 

 Science. 



The work is somewhat of an advanced character. There are a great 

 number of exercises for the student ; those following the examples being less 

 difficult than those at the end of the book. We are sorry to notice so long a 

 list of errata, but this will most probably be avoided in subsequent editions. 



Geometrical Drawing ; comprising the use of Scales and 



Practical Geometry, with numerous examples. By Rev. J. H. Robson, M.A., 

 LL.D. Second edition, revised and enlarged, crown 8vo, pp. 162. (London : 

 Relfe Bros. 1886.) Price 3s. 6d. 



The work before us has a well-executed plate of Geometrical Scales. The 

 exercises throughout are carefully explained. The subject-matter of the 

 present edition has been wholly re-arranged, the problems on the Straight 

 Line, Triangle, Circle, Polygon, and Quadrilateral being placed in separate 

 chapters. The book will doubtless be found useful by young students. 



Helps to Higher Arithmetic, for the use of Schools and 



Candidates for the Public Examinations. By the Rev. G. F. Allfree, M.A., 

 St. John's Coll., Camb., and T. F. Scudamore, B.A., Christ's Coll., Camb. 

 (London : Hamilton, Adams, and Co. Brighton ; H. and C. Treacher. 

 1885.) Crown 8vo, price 3s. 6d. 



If not the best^ this is one of the best, books of the kind we have met with. 

 It is divided into 20 sections, and contains nearly 150 examples worked out and 

 fully explaintd ; the worked-out examples in each section are followed by a 

 collection of exercises sufficient to make the learner thoroughly acquainted 

 with the subject under discussion. After the different sections have been 

 thoroughly treated, 1,200 miscellaneous questions are given. The method of 

 working out the various examples, and the arguments employed, are so clearly 

 given that the student is sure to go through them with pleasure, 



