PREFACE.

IX

Economic Museum at Kew, the Bibliotheca Historico-Naturailsfrom 1862 to 1880, the Botanisches Centralblatt since itsestablishment last year to the present time, The PharmaceuticalJournal from its formation in 1842 to the end of October last.Mr. II. B. Wheatley was kind enough to furnish me withthe titles of articles in the Journal of the Society of Arts tothe 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 Vegetable Technology; thenumber of articles brought forward from the original list is326, which has been increased, as noted, to 3580, exclusiveof translations and different editions. One peculiarity of theold 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 ignoredGerman literature on the subject, would he sadly deficient.

The Journal of Applied Science and The Technologist havenot been regularly searched and cited, like the Journal of theSociety of Arts and The Pharmaceutical Journal; for whilstconfidence may he reposed in the statements given in thesetwo latter journals, I could not confidently assert the same ofthe two former.

I have endeavoured to meet the wants of inquirers bycompiling a comprehensive index. This not being an element-ary work on applied botany, I have not attempted the taskof determining the various products which appear under thenative names, sometimes in different spellings; to have done socritically would have consumed months to very little purpose.The Index is designed to help in finding the books on a givensubject, which are distributed under the authors’ names, andmore than this should not be demanded; a directory does this