1833.] Mountains from the boiling point of water. 199 
feet. 
Example. Boiling point at upper StARIOMs. 4 os tase 185° = 14548 
Barom. at Calcutta (at 32°) 29.75 
Logar. diff. = 1.47712— 1.47349 = ,00363 x.0006 = 218 
. Approximate height 14330 
Temperature, upper station, ee 80 = multiplier ........ 1.100 
Calcutta, .. 84 
Correct altitude, ft. 15763 
3. Assuming 30.00 inches as the average height of the barometer at 
the level of the sea (whichis however too much), the altitude of the 
upper station is at once obtained by inspection of table I, correcting 
for temperature of the stratum of air traversed, by table II. 
Tasie I.—To find the Barometrical Pressure and Elevation correspond- 
ing to any observed temperature of boiling water between 214° and 180°. 
CO 
a é Total Altitude 
pone mt a dified from Tred-} ferences.(or fa- 
Barometer (mo-| Logarithmic dif- from 30.00 i Value of each 
Water gold’s formula.) | thoms). the level of ‘he Algtade: ok a ae 
oO inches. era feet. feet. 
213 30.59 _ ot 
84,5 —507 
212 30.00 84.9 509 
211 29.42 , + Her + 
85,2 511 51 
210 28.85 85.5 1021 513 
209 28.29 85.8 1534 515 
208 Dhe 86.2 2049 517 
206 26.64 87.1 3085 529 
a3 Jae 87,5 3607 524 
204 25.59 4131 
87,8 526 
203 25.08 88.1 4657 528 
202 24.58 2 5185 
88,5 531 53 
201 24.08 88.9 5716 533 
200 23.59 “5 6250 = 
89,3 536 
199 23.11 89,7 6786 538 
198 22.64 ? 7324 
90,1 541 54 
197 22.17 7864 F 
90,5 543 
196 7A) | 8407 
91,0 546 
195 21.26 91.4 8953 548 
= ote 91,8 9502 551 55 
193 20.39 92.2 10053 553 
192 19.96 z 10606 : 
92,6 556 
191 19.54 11161 
93,0 558 
ae x3 93,4 igo 560 56 
189 18.72 93.8 12280 563 
188 18.32 2 12843 
94,2 565 
187 17.93 13408 4 
94,8 569 57 
186 17.54 95,3 13977 572 
185 17.16 95,9 14548 575 
184 16.79 } 96.4 15124 578 58 
183 16.42 96.9 15702 58] 
182 16.06 97 4 16284 nad 
181 15.70 oo 16868 Bey 
130. | 15.35 , 17455 59 
The fourth column gives the heights in feet, 
