17. Vacancies in the Council to be filled up by nomination 

 of the existing Council. 



18. Neither the President, nor Vice Presidents, shall hold 

 the Office of Treasurer or Secretary. 



19. The Council shall have the power to make By-Laws, 

 to remain in force until the next General Meeting; and power 

 to sell or exchange duplicates of the Articles in the Reposi- 

 tories of the Institution, and to purchase others ; but all sales 

 or pui'chases of other property belonging to, or for the Institu- 

 tion, must be sanctioned by a Meeting of ordinary Members. 

 The Council to have the sole charge of the funds of the Institu- 

 tion, for the general purposes thereof, except in so far as they 

 may be controled by a vote of the Ordinary Members for any 

 particular purpose. 



20. General Monthly Meetings to be held for the purpose 

 of hearing Essays and Communications, or Reports of the 

 Committees, if directed by the Council ; and for other business. 



21. All Papers' to be read at the General Monthly Meetings, 

 shall be first examined and approved by the Council. 



22. Persons desirous of making communications verbally, 

 must give notice of the subject thereof to the Council: any 

 person present may make observations thereon. 



23. General Annual Meetings to be held on the first 

 Monday in June of each year, at 12 o'clock, a. m and General 

 Monthly Meetings on the last Wednesday of every month, at 

 8 o'clock, p. M. 



24. The Secretaries to open the General Annual Meetings, 

 by a Report of the Proceedings of the Institution during the 

 past year. The other Officers to detail the state of their 

 several Departments ; and the President, or another Member 

 deputed by him, shall close the Meeting by a Discourse on the 

 progress of knowledge during the past year. 



25 The Museum, Gardens, and other Repositories of tlie 

 Institution, to be open to the public, under Regulations to be 

 fixed by the Council for the time being. 



