JV ADVERTISEMENT. 



must be content with never going beyond a certain point, 

 and with reaching that point by the most expeditious route. 

 A few, thus initiated in the truths of science, will no doubt 

 push their attainments further ; and for these the works in 

 common use will suffice ; but for the multitude it will be 

 most essential that works should be prepared adapted to their 



circumstances It is not necessary that all who are 



taught or even a considerable proportion should go beyond 

 the rudiments ; but whoever feels within himself a desire and 

 an aptitude to go further will do so, — and the chances of dis- 

 covery, both in the arts and in science itself, will be thus 

 indefinitely multiplied. Edinburgh Review, No. 81. 



