404 



Results of Makerstoun Observations, 1844. 



The observations of the dry and wet bulb thermometers were usually made about l m before the hour of 

 Gbttingen mean time, that is about 9 m after the Makerstoun hour ; the observations of the barometer were made 

 about l m or 2 m after the hour of Gbttingen mean time, that is about ll m or 12 ra after the hour at Maker- 

 stoun. The hour, astronomical reckoning, without the additional minutes, of Makerstoun mean time is given 

 in the Tables : in the remarks, the observation has been supposed to be made 10 m after the Makerstoun hour, 

 and civil reckoning is used. 



TABLE I. — Daily, Weekly, and Monthly Means of the Temperature of the Air, as deduced from 

 the readings of the Dry Bulb Thermometer, for 1844. 



Civil. 

 Day. 



Jan. 



Feb. 



March. 



April. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 



1 



29-8 



29-3 



38-0 



44-2 



52- 1 



48-2 



51-9 



55-3 



[57-3] 



52-8 



45-6 



[38-5] 



2 



25-8 



310 



36-4 



46-5 



54-5 



[50-8] 



54-1 



55-0 



58-8 



530 



43-9 



370 



3 



33-8 



30-2 



[34-8] 



44-5 



51-3 



51-6 



53-4 



510 



54-4 



54-1 



[44-2] 



36-2 



4 



34-7 



[28-5] 



34-5 



400 



45-8 



53-4 



49-9 



[54-9] 



58-6 



49-5 



42-5 



321 



5 



45-4 



26-0 



30-8 



38-9 



[51-2] 



56- 1 



53-0 



57-6 



58-3 



451 



42-7 



260 



6 



42-5 



23-1 



32-5 



39-2 



55-1 



601 



52-6 



55-7 



58-1 



[47-0] 



430 



22-3 



7 



[38-5] 



31-4 



32-7 



[44-3] 



51-2 



58-2 



[53-4] 



54-6 



60-7 



41-1 



41-2 



24-0 



8 



36-8 



32-8 



34-9 



48-2 



49-2 



59-2 



54-6 



55-5 



[56-1] 



52-8 



43-8 



[27-7] 



9 



33-6 



34-8 



44-7 



51-9 



50-1 



[57-2] 



54-5 



54-2 



54-4 



49-2 



44-7 



30-6 



10 



38-2 



32-2 



[36-8] 



47-8 



47-2 



54-3 



56-0 



52-2 



52-5 



52-3 



[41-8] 



32-8 



11 



40-3 



[34-6] 



40-1 



45-2 



49-3 



54-6 



56-2 



[54-5] 



52-6 



49-4 



39-1 



30-8 



12 



41-6 



31-2 



34-3 



43-8 



[50-4] 



571 



54-1 



55-6 



51-8 



49-8 



39-6 



30-5 



13 



34-5 



34-8 



34-4 



48-4 



55-9 



58-3 



52-5 



54-3 



50-4 



[49-7] 



42-7 



29-6 



14 



[35-2] 



41-6 



36-0 



[46-8] 



510 



54-6 



[53-2] 



55-5 



520 



49-3 



41-5 



34-4 



15 



27-9 



42-8 



332 



49-8 



48-7 



53-0 



50-3 



55-0 



[51-4] 



48-7 



49-5 



[34-2] 



16 



31-1 



40-0 



33-0 



44-6 



49-3 



[52-8] 



53-7 



54-5 



57-3 



48-6 



50-4 



35-7 



17 



360 



40-8 



[35-2] 



48-8 



41-9 



50-5 



52-7 



52-3 



50-1 



47-8 



[48-1] 



37-5 



18 



41-6 



[35-6] 



31-7 



47-2 



39-9 



51-2 



54-5 



[54-1] 



470 



43-5 



50-2 



37-7 



19 



39-7 



35-5 



39.9 



51-0 



T45-2] 



49-3 



53-0 



53-7 



48-7 



38-0 



49-8 



32-3 



20 



34-3 



29-1 



37-5 



52-8 



"46-1 



51-8 



53-7 



55-9 



47-4 



[40-3] 



47-4 



23-8 



21 



[37-1] 



25-7 



35-9 



[48-8] 



47-7 



57-4 



[58-3] 



53-0 



42-9 



37-8 



38-3 



28-5 



22 



37-2 



23-3 



42-2 



47-0 



46-1 



58-4 



62-8 



51-9 



[46-6] 



39-2 



31-8 



[30-5] 



23 



35-7 



28-9 



40.6 



48-1 



46-1 



[54-2] 



63-8 



54-5 



43-8 



35-7 



39-4 



34-7 



24 



34-4 



31-0 



[42-6] 



46-7 



48-4 



58-6 



61-8 



530 



49-1 



35-5 



[37-6] 



32-3 



25 



42-3 



[29-5] 



42-3 



49-0 



48-6 



50-6 



63-8 



[52-3] 



47-6 



44-3 



30-6 



31-2 



26 



41-0 



29-1 



45-4 



47-5 



[46-8] 



48-7 



60-6 



52-7 



55-9 



46-4 



37-4 



321 



27 



47-5 



29-2 



49-1 



45-7 



46-2 



511 



63-4 



49-1 



57-3 



[43-1] 



48-2 



31-3 



28 



[40-3] 



35-2 



425 



[48-2] 



45-1 



55-2 



[58-5] 



52-6 



53-9 



40-5 



46-1 



29-5 



29 



42-2 



36-5 



47-5 



48-8 



46-2 



53-6 



56-4 



54-5 



[53-4] 



44-3 



421 



[32-1] 



30 



38-5 





43-8 



46-0 



47-8 



[53-2] 



520 



57-1 



47-8 



47-6 



37-7 



35-2 



31 



30-5 





[44-8] 





47-6 





54-8 



60-3 





47-8 





34-4 



Mean 



36-92 



32-22 



38-23 



46-60 



48-46 



54-20 



55-56 



54-32 



52-46 



45-71 



42-66 



31-63 



The observations of the dry and wet bulb thermometers, from pages 172-308, are not corrected for the errors 

 of the thermometers ; the corrections have been applied for the above and following Tables. 



Annual Variation of Temperature. — The monthly means at the foot of Table I. are slightly different from 



the true monthly means, on account of the want of observations on the Sundays ; the difference, however, may 



be obtained with sufficient accuracy from the observations of the register maximum and minimum thermometers. 



The monthly mean temperatures deduced from all the observations of the register thermometers are as follow : — 



Jan. Feb. March. April. May. June. July. Aug. Sept. Oct. Nov. Dec. 



36°-06 32°-73 38°-73 47°-25 48°-27 55°-20 56°-06 55°63 52°86 46°-36 42°07 32°.14 

 when the observations of the register thermometers on Sundays are omitted, the means are — 

 36°-63 32°-47 38°60 47°-08 48°-69 55°-26 56°-07 55°-87 53°-02 46°-33 41°-88 31°73 



The differences between the two series are — 

 + 0°-43 +0°-26 +0°-13 +0°-17 +0°-03 -0°-06 -0°01 -0°-24 -0°-16 + 0°-03 +0°-19 + 0°-41 



