1832.] 



in the vicinitxj of Dehli. 



511 



Table V. For finding the dew Point from the Temperature of the Air, 

 and that of the Wet Thermometer. 





Temperature of the Wet Thermometer. 



D. 



110o 



100° 



90s 



80° 



70° 



60o 



50° 



40° 



30q 



20q 



1° 



.006 



.006 



.006 



.006 



.006 



.006 



.007 



.007 



.007 



.007 



2 



.013 



.013 



.013 



.014 



.014 



.014 



.014 



.014 



.015 



.015 



3 



.021 



.022 



.022 



.023 



.023 



.023 



.024 



.024 



•025 



.025 



4 



.030 



.031 



.032 



.032 



.033 



.034 



.035 



.035 



.036 



.037 



5 



.040 



.041 



.042 



.043 



.044 



.045 



.046 



.047 



.048 



.049 



6 



.051 



.052 



.053 



.054 



.055 



.056 



.057 



.058 



.060 



.061 



7 



.062 



.063 



.065 



.066 



.067 



.068 



.070 



.071 



.073 



.075 



8 



.073 



.074 



.076 



.077 



.079 



.081 



.082 



.084 



.086 



.089 



9 



.084 



.085 



.087 



.089 



.091 



.093 



.095 



.097 



.100 



.103 



10 



.095 



.097 



.099 



.101 



.104 



.106 



.109 



.111 



.114 



.117 



11 



.107 



.109 



.111 



.114 



.116 



.119 



.122 



.125 



.128 





12 



.120 



.122 



.124 



.127 



.130 



.133 



.136 



.139 



.142 





13 



.132 



.134 



.137 



.140 



.143 



.146 



.150 



.153 



.156 





14 



.145 



.147 



.150 



.154 



.157 



.160 



.164 



.168 



.171 





15 



.157 



.160 



.164 



.168 



.171 



.175 



.179 



.183 



.187 





16 



.170 



.174 



.177 



.181 



.185 



.190 



.194 



.198 



.203 





17 



.183 



.187 



.191 



.195 



.199 



.204 



.209 



.214 







18 



.196 



.200 



.205 



.209 



.214 



.218 



.224 



.229 







19 



.210 



.215 



.219 



.224 



.229 



.234 



.239 



.245 







20 



.224 



.229 



.233 



.239 



.244 



.250 



.256 



.261 







21 



.238 



.243 



.247 



.253 



.259 



.265 



.272 



.278 







22 



.252 



.258 



.263 



.269 



.276 



.282 



.289 



.295 







23 



.266 



.272 



.278 



.284 



.290 



.297 



.305 





Bar. 



Mul. 



24 



.281 



.286 



.292 



.299 



.306 



.313 



.321 









25 



.295 



.301 



.307 



.314 



.321 



.329 



.337 





29.5 



.02 



26 



.309 



.316 



.323 



.330 



.337 



.345 



.353 





29.0 



.03 



27 



.324 



.331 



.339 



.347 



.354 



.362 



.370 





28.5 



.05 



28 



.339 



.346 



.354 



.362 



.370 



.379 



.388 





28.0 



.07 



29 



.354 



.362 



.370 



.378 



.386 



.395 







27.5 



.08 



30 



.369 



.377 



.385 



.394 



.402 



.411 







27.0 



.10 



31 



.385 



.393 



.402 



.411 



.420 



.429 







26.5 



.12 



32 



.400 



.408 



,.417 



.427 



.437 



.447 







26.0 



.13 



33 



.416 



.425 



.434 



.444 



.454 



.464 







25.5 



.15 



34 



.431 



.440 



.450 



.460 



.470 



.480 







25.0 



.17 



35 



.447 



.457 



.467 



.476 



.487 









24.5 



.18 



36 



.462 



.472 



.482 



.493 



.504 









24.0 



.20 



37 



.478 



.488 



.499 



.510 











23.5 



.22 



38 



.494 



.505 



.516 



.527 











23.0 



.23 



39 



.510 



.521 



.532 













22.5 



.25 



40 



.526 



.538 



.549 













22.0 



.27 



p 

 N.B. — The numbers in this Table to be multiplied by— , B being the height of 



the Barometer : or, which will be easier, deduct therefrom the product of the ta- 

 bular number by the multiplier opposite the height of the barometer in the small 

 table above*. 



* We omit Table VI. of the Force of Vapour, because it may be found in any physi- 

 cal or chemical work ; besides which, the tensions of vapour at temperatures between 

 60 and 120, require to be more accurately determined for the present state of atmos- 

 pherical knowledge. — Ed. 



2 T 



