(314) 
the view of the specimen itself. We have already secured 
the following supply of blocks. 
Number of Blocks. Width. Length. 
1447 1¥% inches 1% inches 
128 2 tt 2 7 
125 3% oy. 
125 4 6 4 6s 
125 434 6 4% 6c 
III 5% “cs 5% cc 
203 7 ws 4 66 
26 6 6 12 “c 
25 6 6 18 (iz 
25 6 6c 24 7] 
25 12 a 12 “ 
25 12 « 13 
25 12 66 24 7 
Total, 1,115 
The blocks below 7 x 7 inches are made to accommodate 
the specimen jars referred to above, but they arz equally well 
adapted to the display of dry objects not in jars. The larger 
sizes beginning with the block 6 x 12 inches increase by 6 
inches in one or both dimensions and may be used for the 
more bulky specimens or extra large jars. The blocks are 
to be of a dead black color when finished; part of our supply 
has already been ebonized while the remainder is in prepara- 
tion. 
4. Exhibition cards. After a number of experiments, the 
best cardboard for displaying flat specimens of plants and pho- 
tographs, plates and drawings was found to be 16-ply pearl- 
gray board, such as is used for making photograph mounts. 
This card soils less readily than other kinds and fades very 
slowly, as we have learned from both information and experi- 
ment. To supply our needs during the year the following 
quantities of these cards were purchased : 
