vi Preface. 



the outset, when it was hoped that copies might be suppUed to subscribers 

 at a lower price than .£1. This is mainly due to the fact, then un- 

 known, that the various costly lithographs, many of them in more than 

 one colour, which were made in Calcutta, had, unfortunately, been rubbed 

 off the stones, and their reproduction has entailed a very great outlay, 

 almost equal to the cost of printing the text. 



It has been thought advisable, for the convenience of readers, to arrange 

 the reprinted papers in four parts, according to subject, thus slightly 

 deranging the chronological order, which, however, is maintained under each 

 head, as shown in the table of contents. 



The Editors. 



3l5^1/arcA, 1888. 



