OBSERVATIONS ON THE DIP. 
The Dipping Needle employed in these Observations was the Property of 
Henry Browne, Esq., F.R.S., and is the same which was used in the Voyage 
of Discovery in 1818. An Account of the Observations which were then 
made with it has been published in the Philosophical Transactions for 1819, 
where the Instrument itself and the mode of Observation are fully described. 
The Adjustment of the Dipping Needle to the Plane of the Magnetic 
Meridian, by means of a detached Compass placed at a distance, having 
been found occasionally inconvenient, a Box containing an horizontal Needle 
and Card was fitted to the Instrument itself, previous to the present Expe- 
dition ; the Box was removable when the Adjustment was effected. 
O 
