XVil 
PREFATORY NOTE TO THE ENGLISH EDITION 
THE scope of this book on Flower Pollination is so fully explained 
in the Author’s Preface that little need be said by way of Preface to the 
Translation here presented. Miiller’s book upon the Fertilization of Flowers, 
upon which it is based, has been long out of print in English dress, and its 
place will now be taken by this encyclopaedic work of Knuth. 
The present volume is the first of three comprising the work. It is 
general and deals with the structure of Flowers and of Insects in relation 
to Pollination. 
The second volume, now in the press, is special and contains an 
account of all known observations upon the pollination of the flowers 
of plants of Arctic and Temperate zones. 
The third volume, published, after the death of Knuth, under the 
editorship of Dr. Loew, deals similarly with plants from countries outside 
Europe. 
In this English edition, the appendices of supplementary informa- 
tion in the original, inseparable from a work published by instalments 
during some years, will be incorporated in the body of the text, and this 
first volume contains a noteworthy feature in the Bibliography which 
includes, combined in one list, all the citations in the original and brings 
the record—notwithstanding the statements on page viii of the Author’s | 
Preface—down to Jan. 1, 1904.. The adjustment of this list has been no 
easy task. The co-operation of Mr. J. M. F. Drummond of Cambridge 
and of Mr. S. A. Skan of Kew has been enlisted for the clearing up of some 
difficult points. The burden of revising the references, and of securing 
uniformity in and of checking the citations has been undertaken by 
Dr. Fritsch, and it is hoped that the care he has bestowed upon this 
feature of the volume will make the work more serviceable to readers. 
It remains to state that the translation was begun primarily by 
Dr. Gregg Wilson. He had accomplished a considerable portion of his 
task when a call to the Professorship of Natural History in Queen’s College, 
Belfast compelled him to seek relief from it. The Delegates of the 
University Press were fortunate in being able to entrust the continuance 
of the translation to the competent hands of Professor Ainsworth Davis of 
Aberystwyth, who, using as a basis Dr. Gregg Wilson’s work, so far as 
completed, has given the translation the impress of his own qualities. 
E... Bak. 
DAVIS b 
