304 Asiatic Society. 
10th regt. N.{., and Lieutenant J. D. Herbert, Sth regt. N. 1, 
was laid before the Society at this Meeting. 
This paper is arranged under the following heads : 
1. A general introductory account of the origin and progress 
of the Survey, of the nature of the country, of the instruments 
made use of, and of the modes of calculation. 
2. Table of the latitudes of five principal Trigonometrical 
Stations observed with the reflecting circle and circular astronos 
mical instrument 3 containing the results of 122 crossed obser- 
vations of the sun and stars on both sides of the zenith, at the 
station near Seharunpore, in the plains of the Doab, and of 177 
on the mountain station of the Chour, of 61 at the Fort of Bai- 
raut, of 32 at Soorkurda, and of 28 at Wartoo, which three last 
stations are also on lofty mountains. 
3. The longitude of the lst meridian of the Survey, deduced 
from 24 immersions and emersions of Jupiter’s first satellite, ob- 
served with Dollond’s achromatic refracting telescope, of 42 
inches distance, at the station near Seharunpore, or reduced 
to it. 
4.A general account of the measurement of a base line of 
217,48 feet in the Deyrah Doon, with explanations of the me- 
thods, instruments, and apparatus constructed for the purpose, 
and drawings of the same; and an. account of the small and 
primary triangulation proceeding from the measured base to 
connect the stations of Seharunpore, the Choor Biraut, Soor- 
kunda and Budragh. And a table of the lines and angles of the 
39 small triangles, arranged in columns under the following heads 
of data: 
Angles observed at the three stations.—Angles reduced to the 
centre.— Angles for calculation.— Logarithmic lines.— Loga- 
rithms of the sides.—Length of the sides in feet. 
5. A similar table of 121 great triangles, showing the distances 
of other Trigonometrical Stations, and of snowy and other moun- 
tains and principal points. 
6. Table exhibiting the heights above the sea of 38 snowy 
peaks, the columns containing the following data: 
Names of stations.—Altitudes observed therefrom.—Are of 
dstances to the observed peak.—Corrected elevation. — Tangent 
of the same.—Distance in feet.—Logarithm.—Logarithmie di- 
stance in feet.—Difference of level in feet.—Height of the ob- 
served peak above the sea. 
The highest of the snowy peaks within the limits of the Survey 
appears to be 25,589 feet, and the lowest 16,043 feet aboye the 
sea; and there are 20 peaks more elevated than Chimborazo, 
the most lofty summit of the Andes. 
7. Paper supplementary to the last, showing how to deduce 
satisfactory 
