Dr. BIRCH was born in 1705, and died on the ninth of January, 1766. He was one of the many friends of Sir Hans SLOANE, in the later years of Sir Hans’ life. When the Museum was in course of organization, BIRCH acted not only as a zealous Trustee, but he occasionally supplied the place of Dr. MORTON as Secretary. His literary productions have real and enduring value, though their value would probably have been greater had their number been less. His activity is sufficiently evidenced by the works which he printed, but can only be measured when the large manuscript collections which he bequeathed are taken into the account. Very few scholars will now be inclined to echo Horace WALPOLE’S inquiry—made when he saw the Catalogue of the Birch MSS.—‘Who cares for the correspondence of Dr. BIRCH?’ [Sidenote: BEQUEST OF DAVID GARRICK, January, 1779.] Soon after the receipt of the BIRCH Collection, a choice assemblage of English plays was bequeathed to the Museum by David GARRICK. Its formation had been one of the favourite relaxations of the great actor. And the study of the plays gathered by GARRICK had a large share in moulding the tastes and the literary career of Charles LAMB. Thence he drew the materials of the volume of _Specimens_ which has made the rich stores of the early drama known to thousands of readers who but for it, and for the Collection which enabled him to compile it, could have formed no fair or adequate idea of an important epoch in our literature. [Sidenote: BENEFACTIONS OF SIR W. MUSGRAVE.] Sir William MUSGRAVE was another early Trustee whose gifts to the Public illustrated the wisdom of SLOANE’S plan for the government of his Museum and of its parliamentary adoption. MUSGRAVE shared the predilection of Dr. BIRCH for the study of British biography and archæology, and he had larger means for amassing its materials. He was descended from a branch of the Musgraves of Edenhall, and was the second son of Sir Richard MUSGRAVE of Hayton Castle, to whom he eventually succeeded. He made large and very curious manuscript collections for the history of portrait-painting in England (now _Additional MSS._ 6391–6393), and also on many points of the administrative and political history of the country. He was a zealous Trustee of the British Museum, and in his lifetime made several additions to its stores. On his death, in 1799, all his manuscripts were bequeathed to the Museum, together with a Library of printed British Biography—more complete than anything of its kind theretofore collected.