COMPOSITE GAZETTEER OF ANTARCTICA

rising to c. 520m above Larsen Ice Shelf, E of Cape Church, Seligman Inlet, Bowman Coast, was probably seen from the air by Wilkins, 20 December 1928, and by Ellsworth in November 1935; photographed from the air in December 1940 (USHO, 1943, photograph facing p.270) and surveyed from the ground in January 1941 by USAS (USAAF chart [LR-74], 1942); seen from a distance and roughly located by FIDS from "Stonington Island", 1946-47; resurveyed by FIDS from "Hope Bay" in December 1947. Isla Mateo de Toro Zambrano, Isla Riquelme, referring to the N and S parts of this feature shown as two islands (Chile. DNH chart LIII, 1947). Lewis Island, so called by RARE after Col. R. Lewis (Lewis Point, q.v.) (Ronne, 1949, map p.230 and p.291). Tonkin Island, after John Eliot Tonkin (1921-1996), FIDS general assistant, "Stonington Island", 1945-47, who in 1947 led a sledge party NE to Bowman Coast in order to reconnoitre a route to Larsen Ice Shelf (BA chart 3570, 27.vi.1952; APC, 1955, p.21; DCS 601 sheet 67 64, 1955). Isla Tonkin (Argentina. MM chart 110, 1957; Pierrou, 1970, p.690; Chile. IHA, 1974, p.278). Ostrov Tonkin (Soviet Union. MMF chart, 1961).

Narrow, ice-capped island 3.5 mi long in a N-S direction, marked by ice-free peaks at each end, lying 11 mi SE of Choyce Point, Bowman Coast, in Larsen Ice Shelf. The island was discovered and photographed from the air by the USAS in 1940. It was charted by the FIDS in 1947 and named after John E. Tonkin, FIDS general assistant at Stonington Island, 1945-47; named Lewis Island by RARE following additional aerial photography, 1947. The names Isla Mateo de Toro Zambrano and Isla Riquelme, referring to the N and S parts of this feature shown as two islands, appear on a Chilean hydrographic chart, 1947.

Fue avistada y fotografiada desde el aire por el USAS en 1940. El nombre fue puesto en 1947 por el Servicio Hidrográfico Británico, por J.E. Tonkin, uno de sus miembros. Isla situada frente a la ensenada Seligman, 11 millas al SE de cabo Choyce, frente a la costa E de la península Tierra de O'Higgins, mide 3,5 millas de largo de N a S por 1 milla de ancho y está casi completamente cubierta de nieve, salvo sus cumbres más destacadas.