MA THE MA TICS. 3 1 



Todhunter (I.) continued. 



PLANE TRIGONOMETRY. For Schools and Colleges. Fourth 

 Edition. Crown 8vo. cloth, 5.?. 



The design of this work has been to render the subject intelligible to 

 beginners, and at the same time to afford the student the opportunity of 

 obtaining all the information which he will require on this branch of 

 Mathematics. Each chapter is followed by a set of Examples : those 

 which are entitled Miscellaneous Examples, together with a few in some 

 of the other sets, may be advantageously reserved by the student for exercise 

 after he has made some progress in the subject. In the Second Edition 

 the hints for the solution of the Examples have been considerably increased. 



A TREATISE ON SPHERICAL TRIGONOMETRY. Second 

 Edition, enlarged. Crown 8vo. cloth. $s. 6d. 



The present work is constructed: on the same, plan as the treatise on 

 Plane Trigonometry, to which it is intended as a sequel. In. the account 

 of Napier's Rules of Circular Parts, an explanation has been given of a 

 method of proof devised by Napier, which seems to have been overlooked 

 by most modern writers on the subject. Considerable labour has been 

 bestowed on the text in order fa render it comprehensive and accurate, and 

 the Examples (selected chiefly from College Examination Papers'] have 

 all been carefully verified. 



PLANE CO-ORDINATE GEOMETRY, as applied to the Straight 

 Line and the Conic Sections. With numerous Examples. Fourth 

 Edition, revised and enlarged. Crown 8vo. cloth. Js. 6d. 



The Author has here endeavoured to exhibit the subject in a simple 

 manner for the benefit of beginners, and at the same time to include in one 

 volume all that students usually require. In addition, therefore, to the 

 propositions which have always appeared in such treatises, he has intro- 

 duced the methods of abridged notation, which are of more recent origin ; 

 these methods, which are of a less elementary character than the rest of the 

 work, are placed in separate chapters, and may be omitted by the student 

 atfirst. 



