In sending specimens of plants for investigation it is desirable 
to include the entire plant; if it is too large, portions showing 
leaves, flowers, and fruit are sufficient. It is best to prepare the 
specimens by drying them under pressure between folds of absorb¬ 
ent paper, otherwise the parts may shrink and break so as to be 
hardly recognizable. When dried plants are sent they should be 
protected from breakage in the mail by being inclosed in sheets of 
paper between pieces of stiff pasteboard. If specimens are to be sent 
fresh, moisten them slightly and pack them tightly in a box or in a 
bundle, wrapping them in heavy paper. Write the name of the 
sender on the outside. In the letter accompanying the specimens 
state where each plant was collected, the date, the name of the 
collector, and add any other notes in regard to the economic value 
of the plant. 
Packages weighing less than four pounds may be sent by mail 
at the rate of one cent per ounce. 
llnitcb States Department of Agriculture, 
botanical 
Washington, (D. C., 
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