MENTAL AND MORAL PHILOSOPHY, 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 

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

 capable of affording, and to what class of subjects they may most 

 Jitly 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. The Nonconformist calls it a "masterly 

 book." 



LONDON : K. CLAY, SONS. AND TAYLOR, 1'KINTKKS, BRKAI) STKKET 



