[ 368 ] 
Zenith diftances of a Herculis with the flate of the 
barometer and thermometer. 
1774- 
Degrees. 
Parts of 96.- 
Barom. 
Therm. 
June 50 
D. M. S. 
37 57 36 
P. S.V. 
40 3 14I 
Inches. 
29.7 
Degrees. 
5 « 
July 2 
37 57 46 
40 3 » 4 i 
29,8 
65 
4 
37 57 40 
40 3 142 
29»7 
56 
9 
37 57 41 
40 3 i 4 f 
29,7 
55 
10 
37 57 36 
40 3 14J 
29>7 
55 
16 
37 57 36 
40 3 Mr 
30 >o 
65 
18 
37 57 32 
40 3 144 
30.0 
56 
10 
37 57 32 
40 3 i 4 t 
29,8 
58 
Mean 
37 57 37>4 
40 3 HH 
29,8 
58,5 
The mean of the zenith diflances lliewn on the twa 
o / // // 
fcales of divihons is 37 57 32. Add for refradlion 43,4: 
y/ 
fubtra(ft for line of collimation 13,6: and we have the 
o i a 
true zenith diftance 37 58 1,8. Suppofe the apparent de- 
o y // 
clination of a Herculis on July i 2th to be 14 39 58,5, 
we have the latitude 52° 38'. 
Zenith 
