q52 APPENDICES 
resignation, or otherwise; to provide for the election of foreign and domestic 
members, the division into classes, and all other matters needful or usual in such 
institution, and to report the same to Congress. 
Src. 3. And be it further enacted, That the National Academy of Sciences 
shall hold an annual meeting at such place in the United States as may be desig- 
nated, and the Academy shall, whenever called upon by any Department of the 
Government, investigate, examine, experiment, and report upon any subject of 
science or art, the actual expense of such investigations, examinations, experi- 
ments, and reports to be paid from appropriations which may be made for the 
purpose, but the Academy shall receive no compensation whatever for any serv- 
ices to the Government of the United States. 
Approved, March 3, 1863. 
AMENDMENTS 
AN ACT To amend the act to incorporate the National Academy of Sciences. 
Be it enacted by the Senate and House of Representatives of the United States 
of America in Congress assembled, That the act to incorporate the National 
Academy of Sciences, approved March third, eighteen hundred and sixty-three, 
be, and the same is hereby, so amended as to remove the limitation of the number 
of ordinary members of said academy as provided in said act. 
Approved, July 14, 1870. 
AN ACT To authorize the National Academy of Sciences to receive and hold trust funds 
Be it enacted by the Senate and House of Representatives of the United States 
of America in Congress assembled, That the National Academy of Sciences, incor- 
porated by the act of Congress approved March third, eighteen hundred and 
sixty-three, and its several supplements, be, and the same is hereby, authorized and 
empowered to receive bequests and donations and hold the same in trust, to be 
applied by the said academy in aid of scientific investigations according to the 
will of the donors. 
Approved, June 20, 1884. 
CONSTITUTION OF THE NATIONAL ACADEMY 
As amended and adopted April 17, 1872, and further amended April 20, 1875; April 21, 
1881; April 19, 1882; April 18, 1883; April 19, 1888; April 18, 1895; April 20, 1899; 
April 17, 1902; April 18, 1906; November 20, 1906; April 17, 1907; November 20, 1907; 
April 20, 1911; April 16, 1912. 
PREAMBLE 
Empowered by the act of incorporation enacted by Congress, and approved by 
the President of the United States on the 3d day of March, A. D. 1863, and in 
conformity with the amendment to said act, approved July 14, 1870, the National 
Academy of Sciences adopts the following amended constitution and rules: 
