PREFACE 



THE Index Kewensis is so well-known that it is unnecessary to justify the publication 

 of this first supplement for the decennial period of 1886-1895. There is one thing 

 to be explained — the reason of the delay in its completion. It is a matter of conscience for 

 the author of these lines to absolve Mr B. Daydon Jackson from all responsibility on this 

 point. Shortly after the printing of this volume had begun in Brussels, the state of his own 

 sight, already critical, became so much worse as to cause fear of total blindness. The 

 completion of the work thus only became possible by printing with disheartening slowness, 

 and the correction of proofs during many years, has only been accomplished at the cost of 

 actual suffering. 



These circumstances have been the cause of errors which otherwise would not have 

 occurred. The undersigned therefore begs that these defects may not be attributed to his 

 co-author, Mr B. Daydon Jackson, and he relies on the indulgence of all those to whom this 

 work will be of service. 



Th. DURAND. 

 Brussels, June 1906. 



