MENTAL AND MORAL PHIL.OSOPHY, ETC. 61 



regarded from the material point of view. The principal objects of 

 this Essay are to ascertain how great a portion it comprises, where 

 we are to draw the boundary between it and the contiguous branches 

 of the general science of evidence, what are the ultimate foundations 

 upon which its rules rest, what the nature of the evidence they are 

 capaile of affording, and to what class of subjects tliey may most 

 fitly be applied. The general design of the Essay, as a special 

 treatise on Probability, is quite original, the author believing that 

 erroneous notions as to the real nature of the subject are disastrously 

 prevalent. " Exceedingly well thought and well written," says the 

 Westminster Review. Tlie Nonconformist calls it a "masterly 



LONDON : K. CLAY, SONS. AND TAYLOR, l'RINTEKS, BREAD STREET HILL 



