58 
EXCHANGE SECTION. 
B. Regulations affecting Members. 
1. Members shall contribute dried specimens of jilants only of 
critical or special interest, or those specially requested. Under 
no circumstances shall plants Avhich have no interest other than 
rarity be submitted for exchange, and in no instance should a 
collection be made which is likely to endanger the existence or 
seriously diminish the cpiantity of the plant in the locality con- 
cerned. 
2. Members should not submit indiscriminate gatherings of critical 
plants, but should take steps to ascertain from the Referees, or 
otherwise, that a gathering would be of real value for distribu- 
tion. 
3. Only well dried and well selected specimens should be sent in; 
the specimens should not exceed 18 ins. by 11 ins. in size, and 
should be unmounted; badly prepared specimens may not be 
distributed. 
4. Normally, not less than 10 sheets of each gathering shall be sent, 
and it is suggested that 2,0 sheets is a desirable number at which 
to aim for a gathering. 
5. Appropriate labels should be sent with each gathering. The 
labels should contain the following information: — 
Name of the species. 
Vice-county (name and number), locality and habitat. 
Date of collection and relevant notes. 
Name of collector and his reference number, if any. 
One label should be sent for each sheet of the gathering, and one 
additional label for each gathering. All the labels for each 
gathering should be placed together in an envelope and not placed 
singly Avith the sheets. 
6. Members are entitled to demand the return of any sheets they 
have marked for their own use. They may also indicate which 
sheets should be reserved under Regulation A. 4. 
7. It is essential that members who contribute should inform the 
Distributor of their special needs and requirements. 
8. Members are invited to send in gatherings for distribution, even 
though they do not ivish to receiA'e any specimens in i-eturn. 
[Copies of these Regulations may be obtained from the Hon. General 
Secretary.] 
