415 
defray the expense of printing the cards can be secured. In the 
same way the BULLETIN of the Torrey Botanical Club will undertake 
the publication of the list of authors referred to in the committee’s 
report under z.c. If the number of subscribers. to the index of 
papers above mentioned as in course of publication can be imme- 
diately increased, these author cards will, for the present year, be 
sent free to subscribers. ; 
The committee again call attention to the index of new genera 
and species of plants now being issued on cards by Miss Josephine 
E. Clark of Washington, D.C., and commend this to the support 
of botanists, Regarding this private publication they beg to sug- 
gest (I) that there be added to these cards such marks as will 
Serve to identify the series when distributed in other indexes; (2) 
that in the interest of completeness a// new names relating to 
North American plants be included. ; 
A year’s experience in the working of the rules for citations 
“pproved by the Madison Congress has not shown the necessity 
or desirability of any changes, To those rules, however, the com- 
mittee desire to add the following amplifications : 
Inf. p. 46, 1. c., before the last sentence insert: In case the 
original Paging is unknown an em dash should occupy its place, 
‘ ‘ reprint paging being given in accordance with the foregoing 
rule, ; 
The committee also recommend the adoption of the two fol- 
lowing Paragraphs as addenda: 2 
J. lf it is considered desirable to give other data than series 
number (if any), volume number, page and date, these should be 
added in brackets after the date. But useless or unnecessary data 
Should be avoided. — 
£. Citations of reviews, abstracts and all such secondary refer- 
“neces should be enclosed in parentheses. 
Since uniformity is the chief object in the adoption of the rules 
for citation by the Congress, the committee call attention to the 
_ RE€cessity of an exact following of these rules by as many writers. 
and publishers as can be induced to give adhesion to them. To 
ilitate this we recommend that the editors of the BULLETIN of 
. the Torrey Botanical Club, the BoranicaL GazeTTE, ERYTHEA _ 
_ 8nd the American Naturatist be requested to publish these 
