INTRODUCTORY NOTE. 



This Volume contains 57328 entries of titles of papers by 10089 Authors from the beginning 

 of the letter I to Marbut. 



The total number of entries printed for the period 1884 1900 is now brought up to 

 222428 as follows : 



The members of the Staff upon whom now devolves the task of the final stage of preparing 

 the remaining slips for the press and of proof-reading are Miss Vagner, Miss Barnard and 

 Miss Chapman. The Committee acknowledges with grateful thank.s the zeal and ability which 

 they continue to show in carrying out their duties. 



The Committee desires also once more to put on record its indebtedness to the Syndics of 

 the Cambridge University Press for their unceasing care and efficiency in carrying out their 

 part of this great undertaking. 



Since the retirement of Dr. Herbert M'^Leod, F.R.S., in 1915, as Director, which was alluded 

 to in the Introductory Note of Volume XV, he has nevertheless continued to help the Com- 

 mittee with advice as occasion demanded. The place of Chairman of the Committee was filled 



.' srS-'l 



Y 



