15. Whenever a Fellow shall be three months in arrear in the payment of his annual contributions, the Treasurer shall forward to him a Letter, of the Form No. 3, or of the Form No. 4 in the Appendix, according as he shall reside in London or in the Country. 16. If the arrears be not paid within one month after the forwarding of such Letter, the Treasurer shall report such default to the Council, and the Council shall use its discretion in erasing the name of the defaulter from the List of Fellows; and he shall not be allowed to attend the Meetings of the Society, nor to enjoy any of its privileges and advantages, until his arrears be paid. No Member of the Society whose subscription is three months in arrear, and who shall have received notice from the Treasurer, shall be allowed to attend any General or Council Meetings. At the expiration of six months, the name of the defaulter shall be suspended in the Meeting Room. [Sidenote: Retiring of Fellows.] 17. Any Fellow may withdraw from the Society, by signifying his wish to do so, by letter under his own hand, addressed to one of the Secretaries. Such Fellow shall, however, be liable to the Contribution of the year in which he signifies his wish to withdraw; and shall continue liable for the Annual Contribution until he shall have discharged all sums due by him to the Society; and shall have returned all books, or other property, borrowed by him of the Society; or shall have made full compensation for the same, if lost or not forthcoming. [Sidenote: Expulsion of Fellows.] 18. Should there appear cause, in the opinion of the Council, for the expulsion from the Society of any Fellow, a Special General Meeting shall be called by the Council for that purpose, and if three-fourths of those voting agree, by ballot, that such Fellow be expelled, the President, or other Fellow in the Chair, shall declare the same accordingly, whereupon his name shall be erased from the List of Fellows. [Sidenote: Election of Honorary Fellows, Corresponding Members, Local Secretaries, etc.] 19. The Honorary Fellows, Corresponding Members, and Local Secretaries, shall be elected by the Council, under the same conditions as laid down in Par. 9, for ordinary Fellows, and such elections shall be announced to the Society at its next ordinary Meeting. [Sidenote: Annual General Meetings.]