This decorative double-hemisphere map was updated with the new astronomical observations of Chirikof and Delisle. The map features the Sea of the West and a Northwest Passage in North America, and a conjectural shape for Australia. The title and dedication cartouches are tucked between the cusps; the hemispheres are supported on the shoulders of two men. The map is surrounded by a decorative rococo-style border, printed from a separate plate as the map.

References: McGuirk #128; Shirley (BL Atlases) T.BRI-3a.

Condition: B+

Original color on watermarked paper with an extraneous crease adjacent to centerfold at bottom, light soiling, and toning along the edges of the sheet. Trimmed at top by bookbinder with small loss of decorative border.