xii Preface. 



India, and how important in many respects the citrus 

 tree is, but also to warn them what to avoid, and how 

 to turn this industry to the best account. As a rule, 

 when an industry in India succeeds, and yields a fair 

 profit, many rush in to spoil it by competition. Few 

 ever attempt to strike out a new line for themselves. 

 Theyfotf one who succeeds in any new line has usually 

 an advantage, especially where trees require some 

 time to come into full bearing, which it would be 

 difficult for others afterwards to keep up with. 



In the accompanying Atlas I have described as fully 

 as I could all the specimens that came under my 

 notice. I have given so many drawings of the same 

 type, in order to show them from different climates 

 and soils, as some kinds of citrus are much affected by 

 changes in their surroundings. Moreover, I thought 

 it would be of some value to leave records of any dis- 

 tinctions that may be made out by the senses of one 

 and the same person, as the same colour, scent, and 

 taste might be differently interpreted by different 

 persons. 



There may be some varieties which I may not have 

 met with or heard of. If so, they must be left for 

 some other investigator to discover and describe.* 



As this work is intended mostly for India, I have 

 entered fully on the cultivation of oranges and lemons 

 in that country. This has made that chapter rather 

 voluminous. I hope, however, that this may be a 

 defect on the right side. 



The list of dates in the Appendix might perhaps be 

 considered unconnected with the subject of this work. 

 But their aim is to elucidate the antiquity and fre- 



* The observations on the leaves of young seedlings are frag- 

 mentary ; but as I had so many varieties of them, I thought some 

 record of them might be useful. 



