284 Scientifie Intelligence. 
placed by cotton, aa “ah mi a sewed al The throat, neck 
and orbits are also filled with cotton. The specimen should then 
be meres arranged, encircled by a slip se? oper; and placed on 
a bed of cotton. Before this, the flesh of the wings should be 
laid wes and arsenic applied in the recent manner. 
For mounting, it only needs to run one wire through the foot, 
tarsus, and so on through the neck to the forehead, and another 
thr i 
ceparetine te hi method one of great Si ciaaees and 
the specimens will be better for study than skins, inasmuch as the 
. Small 
kept some days for skinning by a similar process, and an opening 
into the brain may be made through the roof of the mouth, if 
rred. i 
is College, July, 18 
This with all sila: methods of preparing permanent specimens, 
without ered fey has been found to be of comparatively little 
use in the damper air of the Eastern States, especially near the 
coast, — all dried preparations are so liable to mould and de- 
— 
A Synopsis et 27 Family Unionide ; by Isaac Lna, LL.D., 
Vice Pree Amer. Phil. Soc. &e. 4th ed., ve eatly rénlatped 
ree improved. 184 .4to. Philadel hia, 1870. ape C. Lea). 
oer: Lie i 
Synopsis. 
issue of the preceding « edition, the number af known species — has 
various corrections of former determinations 
have been made. ‘aes subject of the arrangement of the species 
in genera is discussed in the earlier part of the volume, ere 
tables are given, with very full synonymy id numerous annota- 
tions. The table of geographical distribution, which next follows, 
is very much enlarged. The volume closes with an Index of 
the names of species and a statement of the place of publication 
of each, and finally a long Bibliography. 
