278 
REPORT ON THE PHARMACOPOEIA. 
improvement, were the process of displacement with- 
held from the Pharmacopceia J until a longer period of time 
had familiarised the] whole pharmaceutic community with its 
details, and thereby rendered so particular a description of it 
unnecessary; and the subject was referred to a sub-committee, 
to report a detailed direction of the process of displacement 
proper to be placed in that portion of the Pharmacopoeia 
which precedes the pieparations. This sub-committee, con- 
sisting of Messrs. Fisher, Duhamel, and Procter, reported 
such directions, which, after close scrutiny and amendment, 
were adopted, which, with the reasons assigned for their adop- 
tion, are entered upon the Journal of Amendments. Provided 
with this general description of the process, the pharmaceut- 
ist will be enabled to understand and fulfil the direction " to 
displace," as he is that " to filter" or to "crystallise." The 
adoption of this amendment, by the representatives of the Na- 
tional Convention, the Committee most earnestly desire. 
The whole work, having thus passed through the hands of 
the Committee in detail, was referred to a sub-committee, 
consisting of Elias Durand, Ambrose Smith, and William 
Procter, Jr., who were instructed to revise the labors of the 
whole Committee. This sub-committee, immediately upon its 
appointment, proceeded to an examination of the work, re- 
ducing its parts to symmetry, correcting errors of inadvertence, 
modifying such formulae as subsequent reflection indicated as 
requiring improvement, rendering every part consistent with 
the general design, and giving the last feature which was to be 
impressed upon its form. 
After a careful consideration, the several objects of inquiry, 
as stated above, were brought before the Committee of Revi- 
sion in a report which embraced every topic appearing to re- 
quire a review. In general, a ready concurrence in their re- 
commendations was yielded, and by this means the whole 
work has been rendered as correct as it has been in the power 
of the Committee to make it. 
The Committee believe they have nothing further to add, 
in regard to the preparations, and will proceed to complete 
