The Supreme Court of Appeals shall have the power and it shall be its duty, to purchase such new and additional books for the library as in its opinion shall be right and proper, and shall cause such exchanges or sales of books to be made as may be for the benefit of the library, and, in general, the court shall cause to be done and performed all things necessary and proper to keep the books of such library in good condition, and for that purpose may cause such catalogs to be made as may be necessary. All expenses necessarily incurred under the order of the court for the purposes of this article, including postage, freight and express charges, shall be paid out of appropriations for that purpose, under the order of the court.