RULES FOR THE BOTANICAL EXCHANGE CLUB. 
The headquarters of the Botanical Exchange Club are at the 
National Herbarium, in the U. S. Department of Agriculture. The 
Botanist of the Department acts as Director of the Club, the fol¬ 
lowing rules being observed: 
1. Conditions of membership : Any botanist may become a mem¬ 
ber of the Exchange Club by paying to the Director the sum of two 
dollars ; this money to be used in payment for printing and inci¬ 
dental expenses. 
2. Credit will be given for specimens sent in by members, as fol¬ 
lows : Eoi' all specimens not exceeding 5 of any one species, except 
those species in the list of which no more are wanted ; for rare 
species credit may be given for a greater number upon application 
to the Director. No credit will be given for poor specimens, or for 
those imperfectly labeled. 
3. A list of the species available for exchange will be sent to mem 
bers from which to choose desiderata. A number of species equal 
to 95%* of the number of specimens sent in may be selected. The 
quality of the specimens returned will be governed, as far as pos¬ 
sible, by the quality of those sent in. 
-1. Well-prepared specimens of flowering plants and vascular 
cryptogams will be received. 
5. Material enough to cover at least 30 square inches should be 
sent with each label. This means several individuals of small plants 
and more than a twig of larger ones. 
6. Fruits, flowers, and leaves should be furnished wherever prac¬ 
ticable. Boots and root leaves must be furnished when character¬ 
istic. Both sexes of dioecious species must be furnished. The 
entire plant of all herbaceous species less than two feet high should 
be sent, folded to within the size of the standard herbarium sheet 
(11A x 16^). Specimens must be well pressed. 
7. Each specimen must have a label giving the name, date, and 
locality of collecting, and the name of the collector. The habitat 
and character of soil, with remarks as to abundance or rarity of 
species, is valuable on a label. 
8. In sending in specimens single sheets of plain light manilla, 
brown, or white paper, varying not more than 1 inch either way from 
11 by 16, must be used. One complete specimen with its label must 
be placed on each sheet, those of the same species'being contig¬ 
uous, and all arranged with genera of each family by themselves. 
The specimens thus arranged should be well packed, addressed to 
the Director, and marked “ For the Bot. Ex. Club " on the outside ; 
otherwise, unless accompanied by letter, they will be considered a 
donation to the National Herbarium. 
9. All material which does not conform to the above rules will be 
returned without credit. 
TO. Address specimens and communications to the Director, 
Db. geo. yasey, 
Botanist, Department of Agriculture. 
(Rule 8 is found necessary to reduce the time required in handling 
the specimens.) 
Nearly 5% are lost in storage by insects, or are not wanted. 
