Instrument for observing zodiacal light mb-width 4985 Left to right are: Bobby

Left to right are: Bobby Moore

The church acted as a chapel-of-ease to St George

the Casuarius emu

South-east view of St Paul's Cathedral with figures and carriages outside

View through Grosvenor Gate to Wilton Place

Instrument for observing zodiacal light mb-width 4985 Left to right are: BobbyView of an equatorial instrument for observing zodiacal light. Illustration from the unpublished paper 'Attempt to apply instrumental measurement to the zodiacal light', by Charles Piazzi Smyth. The paper was written or completed on 25 March 1848 and received by the Royal Society on 13 April. It contained an appendix, from which this illustration is drawn: 'Appendix describing a simple equatorial instrument, adapted to and sufficient for its