PREFACE. IX 



Economic Museum at Kew, the Bihliotheca Historico-Naturalis 

 from 1862 to 1880, the Botanisches Centralhlatt since its 

 establishment last year to the present time, The Pharmaceutical 

 Journal from its formation in 1842 to the end of October last. 

 Mr. H. B. Wheatley was kind enough to furnish me with 

 the titles of articles in the Journal of the Society of Arts to 

 the end of 1880, since then I have taken them out myself. 

 Taken altogether, these entries supply a very fair starting- 

 point for almost every question in Yegetable Technology ; the 

 number of articles brought forward from the original list is 

 326, which has been increased, as noted, to 3580, exclusive 

 of translations and different editions. One peculiarity of the 

 old list was its paucity of works in the German language; 

 this has been to some extent remedied in the present volume, 

 as a book which professed to treat of forestry and ignored 

 German literature on the subject, would be sadly deficient. 



The Journal of Applied Science and The Technologist have 

 not been regularly searched and cited, like the Journal of the 

 Society of Arts and The Pharmaceutical Journal; for whilst 

 confidence may be reposed in the statements given in these 

 two latter journals, I could not confidently assert the same of 

 the two former. 



I have endeavoured to meet the wants of inquirers by 

 compiling a comprehensive index. This not being an element- 

 ary work on applied botany, I have not attempted the task 

 of determining the various products which appear under the 

 native names, sometimes in different spelKngs ; to have done so 

 critically would have consumed months to very little purpose. 

 The Index is designed to help in finding the books on a given 

 subject, which are distributed under the authors* names, and 

 more than this should not be demanded ; a directory does this 



