The object of this paper was partly to introduce to the notice of travellers and residents in tropical countries, a small equatorial instrument, specially contrived for observing the Zodiacal light; and partly to bring forward before amateur astronomers, prominently, the advantage of equatorial mountings in general; as well as to exemplify the best and easiest methods of adjusting and rectifying the instruments, and placing the telescopes in every respect in the most favourable circumstances for yielding good results.