1.1. No Officer of the Association shall hold the same office for more than two terms.

1.2 The President of the Association shall serve as such for a term of office of two years and shall not be immediately re-eligible for any other office.

1.3 The Vice-President of the Association shall serve as such for a term of office of two years and shall then succeed to the office of President for a term of office of two years.

1.4 The Secretary-General/Treasurer of the Association shall serve as such for a term of office of two years and shall be immediately re-eligible for another term. Subject to the limitations set out in Article 1.1, the Secretary-General/Treasurer may be elected to Vice-President or as ordinary member of the Council.

1.5 Ordinary members of the Council shall serve for a term of office of two years. Subject to the limitations set out in Article 1.1, they may be re-elected as ordinary members of the Council or as an Officer of the Association.

1.6 Members who have held office as President may be elected as Honorary President and shall continue as such for as long as they remain members of the Association. Honorary Presidents shall be entitled to attend meetings of the Council, but shall not have the right to vote at Council meetings.

1.7 Casual vacancies whether caused by death, resignation or other¬wise shall be filled in the following manner:

i. If there is a vacancy in the office of President, the Vice-President shall succeed to the office and shall serve for the remainder of the former President's term. This shall not affect her or his subsequent term of office as President.

ii. A vacancy in the office of Vice-President shall not be filled until the next election. If there is a vacancy in the office of Vice-President at least one candidate shall be nominated for the office of President in the next election.

iii. If there is a vacancy in both the office of President and the office of Vice-President, the member of Council (other than Honorary President) who is senior in length of membership of the Association shall become Acting President until the next election. Where two or more members of the Council are of equal seniority in the Association, the oldest of them shall become Acting President. A member who has served as Acting President shall, subject to the limitations set out in Article 1.1, be eligible for election as President or Vice-President on one further occasion.

iv. If there is a vacancy in the office of Secretary-General/Treasurer, the Council shall appoint by co-option a member of the Association to serve in that office until the next election. Provided the person so appointed has not served for more than half of the previous Secretary-General's term before the next election, s(he) shall, subject to the limitations of Article 1.1, be re-eligible for two further terms as Secretary-General/Treasurer, otherwise s(he) shall be re-eligible on one further occasion only.

v. A casual vacancy in the ordinary membership of the Council shall be filled by co-option.

1.8  i The Executive Director shall not be a member of the Council, but may be asked to attend its meetings.

      ii The Executive Director serves subject to the wishes of the Council and may be paid a compensation by the Association.

     iii The Executive Director shall perform such functions as the Council may assign and, if the Association has an office, shall direct that office.

1.9 The Council may appoint such ancillary personnel as may be necessary.

1.10  i The Council shall administer the affairs of the Association and organize its scientific activities, subject to the directions of the General Assembly.

        ii The Bureau, or if need be the President, may in cases of urgency act on behalf of the Council, but shall report on the action taken to the Council as soon as possible.

       iii The Secretary-General/Treasurer shall assist the President in carrying out the decisions of the Council and the General Assembly. S(he) shall cause accounts to be kept and shall make a report to the General Assembly on the activities and finances of the Association for the period since the previous General Assembly.