PEEFACE. 



real article ; and if to such I may happily be affording 

 some help in their reading and their earlier practice, I 

 shall have gained all I could hope from publicity. I 

 have purposely abstained from any lengthened description 

 of the disorders represented, because such is already so 

 fully given in excellent works up to date. 



J. KOALFE COX. 

 London, September 1892. 



