. Himavava Mounratns. 203 
good as I ought to have done: some of the best, I think, are those made 
on the pole star when in the meridian, by observing at the same 
time its elevation, by direct vision, and by reflexion in quicksilver, by 
depressing the telescope, then reversing the instrument quickly, the same 
is repeated, and eight readings are obtained by the opposite micrometers: 
after this method occurred to me, I had only an opportunity of trying it on 
one night, after which cloudy weather came on, and prevented the reflect- 
ed image being satisfactorily seen. Where the pole star is higher than itis 
here, I think very good latitudes may be thus taken: but at Belville the 
latitudes were generally taken by Lieutenant Herzerr and myself, 
with the reflecting circle, as it was proper that the same instrument should 
be used at both extremes of the are. 
9 A THEODOLITE made by Berex. This instrument is the property of 
government, and was lent for Lieutenant Hersert’suse. As the telescopes 
were necessarily of small power, and the verniers only shewed single minutes; 
this theodolite though xood of its kind, was only used when the circle was 
otherwise employed, or could not then be transported. Lieutenant Hersert 
made the most of its limited powers, and as the eye may estimate a less 
quantity than a whole minute, he always repeated the horizontal angles on 
different divisions of the limb: he was obliged to observe the angles at the 
remote and lofty stations of Kedar Kdnta and Uchalart, with the theodo- 
lite only, which will account for the sum of the three angles between those 
two stations, and those of the Clit’, Bairdi and Chandpir, differing from 
180. rather more seconds then they ought, though less than might have 
been expected; as will be seen in the notes. But when there Is an oppor- 
VOL. XIV. 3¥F 
