28 EDUCATIONAL BOOKS. 



Todhunter. Works by I. TODHUNTER, M.A., F.R.S., 

 of St. John's College, Cambridge. 



THE ELEMENTS OF EUCLID. For the Use of Colleges and 

 Schools. New Edition. i8mo. cloth, y. 6d. 



As the elements of Euclid are usually placed in the hands of young 

 students, it is important to exhibit the -work in such a form as will assist 

 them in overcoming the difficulties which they experience on their first in- 

 troduction to processes of continuous argument. No method appears to be 

 so useful as that of breaking up the demonstrations into their constituent 

 parts ; a plan strongly recommended by Professor De Morgan. In the 

 present Edition each distinct assertion in the argument begins a new line : 

 and at the ends of the lines are placed the necessary references to the 

 preceding principles on which the assertions depend. The longer proposi- 

 tions are distributed into subordinate pa. ts, which are distinguished by 

 breaks at the beginning of the lines. Notes, appendix, and a collection of 

 exercises are added. 



MENSURATION FOR BEGINNERS. With Numerous Examples. 

 i8mo. cloth. 2J. &/. 



The subjects included in the present work are those which have usually 

 found a place in Elementary Treatises on Mensuration. The mode of 

 treatment has been determined by the fact that the work is intended for the 

 use of beginners. Accordingly it is divided into short independent chapters, 

 which are followed by appropriate examples. A knowledge of the elements 

 of Arithmetic is all that is assumed; and in connexion with most of the 

 Rules of Mensuration it has been found practicable to give such explana- 

 tions and illustrations as will supply the place of formal mathematical 

 demonstrations, which would have been unsuitable to the character of the 

 work. 



ALGEBRA FOR BEGINNERS. With numerous Examples. New 

 Edition. i8mo. cloth. 2s. 6d. 



Great pains have been taken to render this work intelligible 

 students, by the use of simple language and by copious explanations. J n 



