Temporary observatory for pendulum observations, Sumatra mb-width 4939 A satire on the bewilderment

A satire on the bewilderment of a countryman in London

'O Rare Shon'

Plate 20 from The zoological miscellany

'Wittington's Ghost'

Temporary observatory for pendulum observations, Sumatra mb-width 4939 A satire on the bewildermentSection 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