POINTS. 



Table 1 71 



between the drj' and the wet bulb, when the dew-point has the values given at corresponding points in the body of 

 from 76 centimetres the corresponding numbers in the lineu marked S'/'/SB are to be multiplied by the difference, 

 or above 76. bee examples. 



S T/SB = 



3 



4 



ST/SB = 



5 



6 



7 

 8 



9 

 ST/SB = 



10 



II 

 12 



13 

 14 



ST/SB ^ 

 15 

 16 



17 

 18 



19 

 ST/5B = 



20 



21 



22 



23 



24 



5 775^5" = 



25 



26 



27 



28 



29 



sr/sB-- 



30 



31 



32 



33 



34 



ST/SB - 



35 



-,6 



< — <i = 9 



10 



11 



12 



13 



14 



16 



Dew-points corresponding to the difference of temi>erature given in the above line and the 

 wet-bulb thermometer reading given in first column. 



37 

 38 

 39 



•45 



— 20.0 

 15.8 

 12.4 



•23 



— 19.S 



7-4 

 5-3 

 3-3 

 1.6 



.14 



0.0 

 + 1.8 

 3-5 

 51 

 6.7 

 .09 

 8.2 

 9.6 



II.O 



124' 



1 3-8 



.06 

 1 5. 1 

 16.4 

 17.6 

 1S.9 

 20.1 



•045 



21.4 

 22.6 



237 

 24.9 

 26.1 

 .031 



27.2 



28.4 

 29.5 

 307 



3. .8 

 .024 



32.9 

 34-0 



351 

 36.2 



37-3 



.67 



16.8 

 .29 

 — 13-' 



lO.I 



7.6 



S-2 



-» '> 



o— 



•17 



— I. 



+ 0.; 



3-9 

 5-6 

 .11 



7.2 



8.7 

 10.2 

 11.7 



131 



.07 

 14.5 

 1 5.8 

 17.1 

 18.4 

 19.6 



05 



20.9 



''2.1 



234 

 24.5 



257 



•035 

 26.9 



28.1 

 29.2 

 304 



3'-5 



.027 

 32.6 

 337 

 34-9 

 35-9 

 37-1 



(0 



ill! 

 EXAMPLES. 



Given />=: 72, /, =: 10, / — 'i ^= 5. 



Then tabular number fur /, =: 10 and / — 'i^ S 'S 5-2 



Also 76 — 72 ==4 and fi/'/oflzr .06. 



.'. Correction =:o.o6 X 4= 24 



Hence the dew-point is 5.44 



■TS, '■1 = 7.' — '1 



:8. 



Given ^: 



Then, as above, tabulated numbers 



2 

 Correction :=o.i: 

 Dew-point =: 



X4S=. 



•37 



— i7^7 

 13-4 

 10. 1 



74 



5-1 

 .20 



— 3-0 



i.o 

 + 0.8 



2.7 



4-5 

 .12 



6.2 



7.8 



9.4 

 10.9 

 12.4 

 .08 

 13.8 

 15.2 



16.5 

 17.9 

 19.2 



.06 

 20.4 

 21.7 

 22.9 

 24.2 



254 



.041 

 26.6 

 27.8 

 28.9 

 30.1 

 31.2 



029 

 324 



33^5 

 34-6 



35-7 

 36.S 



•44 



— 18.1 

 135 



lO.I 



7.2 

 .22 



— 47 



2.6 



0.6 

 + 1-3 



3^3 

 .14 



5-1 

 6.8 



8.5 



1 0.1 



1 1.6 



.09 



131 

 14.5 



1 5^9 

 17-3 

 18.7 



.06 

 20.0 

 21.3 

 22.5 

 23.8 

 25.0 



.047 

 26.2 

 27.4 

 2S.6 

 29.S 



309 



.032 

 32.1 



33-3 

 34^4 

 35^5 

 36.6 



•54 



-18.3 



13-5 

 9.9 



•25 



— 6.8 



4^3 

 2.1 



0.1 



+ ^9 

 .16 



3^9 



7^5 

 9.2 



lo.S 



.10 



12.4 



139 



15^3 

 16.8 



18.1 



.07 



19.5 

 20.8 

 22.1 



234 

 24.6 



•053 



259 

 27.1 

 28.3 

 29.5 

 30-7 



037 



31.S 



33-0 

 342 

 353 

 36-4 



.66 



-1S.3 



I3-' 

 .29 

 — 9.4 



6^3 

 3-7 

 1.6 



+ 0.5 

 .18 



27 

 4-7 

 6.5 



8.3 

 1 0.0 



.11 

 1 1.6 

 13.2 

 14.7 

 16.2 

 17.6 



.08 

 19.0 

 20.3 

 21.7 

 23.0 

 24.2 



.06 



25-5 

 26.8 



28.0 

 29.2 

 304 



•037 

 31-6 

 32.8 



339 

 35-1 

 36^2 



3-4 



.67 

 4.07 



.72 



— I 



2 

 •36 



8.8 

 5^7 



3^1 

 0.9 

 .20 



+ '•3 

 3-5 

 5^5 

 74 

 9.1 



•13 



io8 

 12.5 

 14.0 



157 

 17.0 

 .09 



18.5 

 19.9 

 21.2 

 22.6 



239 

 .07 

 25.2 

 26.4 

 27.7 

 28.9 

 30.1 



.04 

 314 

 32-5 

 33-7 

 34^8 

 36.0 



Smithsonian Tables. 



159 



