The second son of William Dalrymple (1772-1847), who was Surgeon to the Norfolk and Norwich Hospital (*Dict. Nat. Biog.*), and brother of John Dalrymple (qv) and Donald Dalrymple (qv), who were also Fellows of the College. Archibald practised in partnership with his younger brother, Donald, the former residing at All Saints' Green and the latter in Surrey Street, Norwich. He was elected Assistant Surgeon to the Norfolk and Norwich Hospital in 1839 in succession to his father, becoming full Surgeon in 1847 and resigning in 1854. In the year 1847, in consequence of the discovery of various abuses in the internal economy of the institution, he and his brother Donald instituted an inquiry into the general management of the hospital, and published a statement which was widely circulated amongst the Governors. This led to the appointment of a Committee to propose new laws and suggest such alterations in the management of the hospital as were considered desirable. The Committee was appointed on October 23rd, 1847. It was remarkable as being the only Committee appointed since the foundation of the hospital in 1771 of which none of the medical or surgical officers of the institution formed a part; and the result of its labours was the recommendation of new laws, confirmed in February, 1848, by which the medical staff was entirely excluded from the Board of Management. Archibald Dalrymple died at Edinburgh on May 28th, 1863.