(3) 
aged and controlled by a Board of Managers as follows: The 
president of Columbia College, the professors of botany, of 
geology and of chemistry therein, the president of the Tor- 
rey Botanical Club, and the President of the Board of Educa- 
tion of the City of New York, and their successors in office, 
shall be ex-officio members of said corporation and of the 
Board of Managers, and shall be known as the Scientific Dr- 
rectors; they shall have the management and control of the 
scientific and educational departments of said corporation and 
the appointment of the Director-in-Chief of said institution, 
who shall appoint his first assistant and the chief gardener, 
and be responsible for the general scientific conduct of the 
institution. All other business and affairs of the corporation, 
including its financial management, shall be under the control 
of the whole Board of Managers, which shall consist of the 
Scientific Directors, as here’n provided, and of the Mayor of 
the City of New York, the President of the Board of Com- 
missioners of the Department of Public Parks, and at least 
nine other managers to be elected by the members of the cor- 
poration. The first election shall be by ballot, and held ona 
written notice of ten days, addressed by mail to each of the 
above-named incorporators, stating the time and place of elec- 
tion, and signed by at least five incorporators. Three of the 
managers so elected shall hold office for one year, three for 
two years, and three for three years. The term of officers 
of the managers elected after the first election, save those 
elected to fill vacancies in unexpired terms, shall be three 
years; and three managers and such others as may be needed 
to fill vacancies in unexpired terms shall be elected annually, 
pursuant to the by-laws of the corporation. The number of 
elective managers may be increased by vote of the corporation, 
whose terms and election shall be as above provided; and 
members may from time to time be added to the Scientific Di- 
rectors by a majority vote of the Scientific Directors, ap- 
proved by a majority vote of the whole Board of Managers. 
The Board of Managers shall elect from their number a Pres- 
