EE 
216 BOTANICAL GAZETTE [SEPTEMBER 
incidental reference, lacking every element of precision. The 
probability that all of his writings are to be found in one ora 
few journals, or series of proceedings, greatly simplifies the com- 
pletion and use of such references, since the Royal Society's 
Catalogue, though perhaps more complete as to titles, is neces- 
sarily even farther behind than the Jahresbericht, Where the 
subject of an earlier paper is again passed in review by the 
author, only the gravest necessity should lead to the selection of 
a new medium for the publication of the later paper. 
Whether the medium of publication selected or accepted be 
a journal or the proceedings of a society, the possibility of hav- 
ing separates struck off for the mere cost of press work, paper, 
and stitching, makes it possible for almost any paper to appeal 
as an independent pamphlet, accredited, to be sure, to the journal 
from which it is an excerpt, but,a book, necessitating author s | 
citation in catalogues, and admitting of more ready arrangement 
in its proper place where the works of a library are disposed of 
the shelves according to subject. The time was when a pafl- 
phlet was considered of little value and quite certain not to be 
preserved, but one of the characteristics of the modern wer : 
is a great and growing appreciation of the value of this class te : 
works, leading to their careful preservation. | 
No small part of the volume of M. de Candolle, already a 
referred to, is devoted to very explicit and well considered a 
tions for preparing the record of one’s observations ass ‘al 
press; and the general conclusion is reached, after a ae 
analysis of the subject, that the maximum value’ of any 
script exists at the exact moment of its completion, in 
this as the most suitable time for its publication. Th 
probable that the publishing of any important work _ the | 
be unnecessarily delayed after it has been pushed to Whe & 2 
inary statement considerably in advance of the co 
the work. Neglecting the publication of an early often 
unfinished work as a means of securing priority, os 
