218 OBSERVATIONS ON THE MEAN TEMPERATURE 



Mean Temperature. 

 0bserved - Calculated. Difference. 



Warsaw, - 48.56 48.79 + 23 



Astracan, - 49.08 50.31 +123 



Vienna, - 51.76 53.90 +2 14 



Pekin, - 54.86 54.25 —0 61 



Nangasaki, 60.80 62.44 +1.64 



Seringapatam, 77.00 76.81 —0 19 



Columbo, - 79.50 79.26 — 0^24 



The differences in this Table (amounting at an average to 

 IVo) are far within the limits of the errors of observation ; but 

 being negative in general, they may be reduced still farther to 

 an average of 1 °, by supposing the Asiatic Pole to have the 

 temperature of + 1° of Fahrenheit, which is 4£* warmer than 

 the Transatlantic Pole. The Formula in this case becomes 



T = 81.8° Sin. D + 1°, 

 from which we obtain the following results : 



Mean Temperature 

 Observed. Calculated. Difference. 



29.85 -U8 



33.31 + o.23 



35.70 -f. 2.44 



Enontekies, 



31°.03 



Uleo, 



33.08 



Umeo, 



33.26 



St Petersburg, 



38.84 



Stockholm, 



42.30 



Moscow, 



43.16 



Warsaw, 



48.56 



Astracan, 



49.08 



Vienna, 



51.76 



Pekin, 



54.86 



Nangasaki, 



60.80 



Seringapatam, 



77.00 



Columbo, 



79.50 



38.37 



— 0.47 



41.57 _o.73 



41.80 



— 1.36 



49.20 4. o.64 



50.70 + L62 



54.25 -j- 249 



54.59 o.27 



62.69 + h89 



76.92 _ .08 



79.33 _o,17 



In 



