MATHEMATICS. 17 



Dodgson. AN ELEMENTARY TREATISE ON DETER- 

 MINANTS, with their Application to Simultaneous Linear 

 Equations and Algebraical Geometry. By CHARLES L. DODGSON, 

 M.A., Student and Mathematical Lecturer of Christ Church, 

 Oxford. Small 4to. cloth, icw. 6d. 



The object of the author is to present the subject as a continuous chain of 

 argument, separated from all accessories of explanation or illustration. 

 All such explanation and illustration as seemed necessary for a beginner 

 are introduced either in the form of foot-notes, or, where that would have 

 occupied too much room, of Appendices. 



Drew. GEOMETRICAL TREATISE ON CONIC SEC- 

 TIONS. By W. H. DREW, M. A., St. John's College, Cambridge. 

 Fourth Edition. Crown 8vo. cloth. qs- 6d. 



In this work the subject of Conic Sections has been placed before the student 

 in such a form that, it is hoped, after mastering the elements of Euclid, he 

 may find it an easy and interesting continuation of his geometrical studies. 

 With a view, also, of rendering the work a complete manual of what is 

 required at the Universities, there have either been embodied into the text or 

 inserted among the examples, every book-work question, problem, and rider, 

 which has been proposed in the Cambridge examinations up to the present 

 time. 



SOLUTIONS TO THE PROBLEMS IN DREW'S CONIC 

 SECTIONS. Crown 8vo. cloth. 4*. 6d. 



Edgar (J. H.) NOTE-BOOK ON PRACTICAL SOLID 

 GEOMETRY. Containing Problems with help for Solutions. By 

 J. H. EDGAR, M.A. Lecturer on Mechanical Drawing at the 

 Royal School of Mines. 4to. 2s. 



In teaching a large class, if the method of lecturing and demonstrating 

 from the black board only is pursued, the more intelligent students have 

 generally to be kept back, from the necessity of frequent repetition, for the 

 sake of the less promising ; if the plan of setting problems to each pupil is 



