PREFACE 



The following Index is separated into five parts, viz., General Index, 

 Index to Species Mentioned, List of Contributors, List of Publications 

 Noticed, and List of Illustrations. The first part contains all communica- 

 tions that are signed, together with editorial and other matter. In the second 

 part every species is indexed about which any fact is stated, but not when 

 it is included in a mere enumeration of what was seen in connection with 

 some other species which is the subject of the article. Nor, as a rule, are 

 foreign species indexed unless they occur also in this country. Where a 

 variety occurs, if it is not indexed separately, its name follows immediately 

 after the number of the page, and is enclosed in brackets. All names of 

 genera and species are indexed exactly as they are used in the text : if 

 Aspidium is originally used then it is so catalogued, and the same with 

 Dryoptcns, or Xephrodium, or Athyrium, or whatever it may be. 



The first twelve numbers of the Bulletin were numbered consecutively 

 and paged separately, not being in volumes. This makes them a little awk- 

 ward to index ; but, in order to indicate these early issues, hyphenated num- 

 bers have been resorted to, the figure before the hyphen indicating 

 the number of the issue, and that after the hyphen telling the page of that 

 particular number. After these issues, the figures bear their usual meaning 

 of volume and page. The articles a and the are not used as index words, 

 but following after the rest of the title, with a comma between. 



B. D. Gilbert. 



