Admission of Member 
Change of category 
Cancellation 
of Membership 
Resignation 
Loss of rights 
Financial 
Commission 
Gifts and Legacies 
In Congress 
In the 
General Assembly 
In Matters 
administrative and 
182 
financial 
Valid majorities 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
The admission of a Member shall be decided by the General Assembly and the rules for voting 
laid down in these Statutes shall apply. 
A Member may at any time raise its category; it may not lower it without the previous assent 
of the General Assembly. 
The cancellation of a membership may be declared by the General Assembly only in the case 
of action manifestly contrary to the interests and objectives of the Society or in the case of 
repeated default in the payment of contributions in spite of a demand for payment which the 
Treasurer shall send to the defaulting Member at least six months before the opening of the 
Congress. 
A Member may resign from the Society by a declaration in writing addressed to the Secretary 
General. The Council shall act upon the declaration and shall inform all Members of it as 
quickly as possible. 
When a Member leaves the Society, whether by resignation or by exclusion, it shall thereby 
forfeit all rights in the Society. 
At each Congress the General Assembly shall elect a Financial Commission consisting of 
three persons. The role of the Financial Commission shall be advisory and consultative. It 
shall examine expenditure of all kinds incurred by the Society and suggest to the General 
Assembly broad lines of financial policy for the Society having regard to its scientific respon- 
sibilities. 
The Financial Commission shall continue to function between congresses. It shall report direct 
to the Council through the Secretary General at least once a year after the annual balance 
sheet has been made up. It shall be present in an advisory capacity at meetings of the General 
Assembly. 
Delegates shall not be excluded from serving as members of the Financial Commission. 
The General Assembly shall be entitled to accept gifts and legacies offered to the Society. 
IV Voting 
20. 
21. 
22. 
23. 
Congress meeting in plenary session may consider, discuss, adopt or reject recommendations, 
expression of its wishes, resolutions, on exclusively scientific matters having no administrative 
or financial bearing, which are presented by one or more Congressional members. 
In the plenary sessions of Congress, the President shall decide whether or not a resolution is 
exclusively of a scientific nature with no administrative or financial bearing. 
Only those Congressional participants present who belong to a Member shall have the right 
to vote. In plenary session decisions shall be taken by a show of hands and by a simple 
majority of votes cast by those present having the right to vote. 
In the General Assembly only Delegates shall have the right to vote. No Delegate shall 
represent or vote for any Member other than his own. Voting will not be by proxy. 
If the President or any Delegate so requests, the vote shall be taken by secret ballot. 
Recourse to a vote by correspondence shall only be permitted in exceptional cases. This pro- 
cedure shall be taken only when it is not in contravention of these Statutes and the Council 
considers it necessary to reach a decision without awaiting a meeting of the General Assembly. 
When voting in the General Assembly on administrative matters (or matters partly administra- 
tive and partly scientific) not involving financial decision, each Delegate shall have at his 
disposal one vote only. When voting on financial matters he shall have at his disposal a num- 
ber of votes equal to the number of the category in which the Member he represents is classed. 
In the General Assembly the President shall decide before the vote is taken whether the 
question under consideration is an administrative or a financial matter. If the question is of a 
solely scientific nature, it shall be referred to the Congress; the Assembly may express a 
recommendation only. 
Resolutions on financial matters shall be passed by a simple majority of the votes cast. 
The adoption of resolutions concerning admission of new Members, cancellation of member- 
ship, alteration to the Statutes or the Bye-Laws, dissolution of the Society or its amalgamation 
with another international organization shall require at least three quarters of the votes cast to 
be in favour of the resolution. 
When a vote by correspondence is taken in respect of admission of a new Member, voting 
papers shall be sent by airmail to every Member at least three months in advance. A decision 
P"