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21 
XXI. The Annual Report of the Academy may be ac- 
companied by a memorial to Congress, in regard to such 
investigations and other subjects as may be deemed advisa- 
ble, recommending appropriations therefor when necessary. 
XXII. The Home Secretary shall present to the Council 
estimates for books and stationery, binding, &c., required for 
the use of the Academy. 
OF THE PROPERTY OF THE ACADEMY. 
XXIII. The proper Secretary shall acknowledge all do- 
nations made to the Academy, and shall report them at the 
next stated session. 
XXIV. The books, apparatus, archives, and other prop- 
erty of the Academy shall be deposited in some ‘safe place 
in the city of Washington. A list of the articles deposited 
shall be kept by the Home Secretary, who is authorized to 
employ a clerk to take charge of them. 
may; A stamp corresponding to the corporate seal of 
the Academy shall be kept by the Secretaries, who shall be 
responsible for the due marking of all books and other ob- ~ 
Jécts to which it is applicable. 
Labels or other proper marks, of similar device, shall be 
Placed upon objects not admitting of the stamp. 
CHANGES IN THE BY-LAWS. 
XXVI. Any By-Law of the Academy may be amended 
°F repealed on the written motion of any — members, 
Signed by them, and presented at a stated session of the 
Academy ; provided the same shall be approved by a ma- 
Jority of the members present at the next stated session. 
