é 17 
the National Academy of Sciences to the best of his ability. 
He shall also subscribe the laws of the Academy. 
Sect. 4. The members of the Academy shall be ar- 
ranged in two Classes, according to their special studies, 
viz.: A, the Class of Mathematics and Physics, and B, the 
Class of Natural History. The corporate members may 
select the Class in which they desire to be arranged. 
Sect. 5. The members of the Classes shall arrange 
themselves in Sections, by inscribing their names under one 
of the following heads: — Class A. Mathematics and Phys- 
ics. Sections: — 1. Mathematics; 2. Physics; 3. Astron- 
omy, Geography, and Geodesy; 4. Mechanics; 5. Chemistry. 
Class B. Natural History. Sections: —1. Mineralogy and 
Geology; 2. Zodlogy; 3. Botany; 4. Anatomy and Physi- 
ology; 5. Ethnology. 
But the Academy retains the power of transferring a_ 
member from one Section to another. 
Sect. 6. A member may be elected an honorary mem- 
ber of any Section by a vote of a majority of such Section. 
Sect. 7. The Academy may elect fifty Foreign Asso- 
ciates, who shall have the privilege of attending the meet- 
ings of the Academy, and of reading and communicating 
papers to it, but shall take no part in its business, and shall 
not be subject to its assessments. 
They shall be entitled to a copy of the publications of the 
Academy. 
ARTICLE II. 
Of the Officers. 
Sect. 1. The officers of the Academy shall be a Pres- 
ident, a Vice-President, a Foreign Secretary, a Home Sec- 
retary, and a Treasurer, all of whom shall be elected for 
2* 
