Temporary observatory for pendulum observations, Sumatra mb-artistname Philibert Boutrois Adam The Whitecross Street Prison for

The Whitecross Street Prison for debtors

The accompanying text states that 'There is little doubt of the Denbigh caol being nearly as pure an oxide of carbon as is likely to be found

He is being waved off by figures in boats

Marquis Cornwallis

Temporary observatory for pendulum observations, Sumatra mb-artistname Philibert Boutrois Adam The Whitecross Street Prison forSection through a tent observatory used for pendulum observations, indicating the location of main instruments (clock, pendulum, telescope and transit instrument) and the masonry pillar for mounting the pendulum clock. This is accompanied by a plan view of the pillar. Inscribed: 'Canvas Observatory' and 'Plan of the Wall'. Figure no. 2 from Report of the length of the pendulum at the equator made on an expedition from the observatory at Madras, by