268 



Abstracts of the Makerstoun Observations, 1843, 



TABLE VII. — Daily, Weekly, and Monthly Means of the Temperature of Evaporation, as deduced 

 from the Nine Daily Readings of the Wet Bulb Thermometer in 1843. 



Civil 

 Day. 



Jan. 



Feb. 



March. 



April. 



May. 



June. 



July. 



Aug. 



Sept. 



Oct. 



Nov. 



Dec. 





o 



o 



o 



o 



O 































1 



[ ] 



38-2 



29-3 



47-5 



43-9 



46-4 



53-2 



53-9 



59-0 



[48-1] 



321 



31-4 



2 



29-4 



33-4 



30-5 



[43-4] 



41-6 



49-3 



[53-0] 



54-7 



61-9 



47-6 



37-2 



39-9 



3 



29-1 



28-3 



31-4 



44-3 



44-6 



43-3 



55-6 



55-2 



[55-8] 



49-4 



36-5 



[40-7] 



4 



36-5 



320 



28-3 



43-3 



46-5 



[45-7] 



52-5 



55-1 



50-2 



53-9 



45-5 



47-3 



5 



32-2 



[33-8] 



[32-6] 



41-7 



40-6 



40-9 



57-7 



51-4 



50-4 



53-6 



[39-6] 



43-4 



6 



35-5 



31-2 



39-7 



43-0 



42-3 



45-7 



54-4 



[55-0] 



59-6 



550 



44-3 



40-1 



7 



37-6 



38-6 



36-7 



42-9 



[43-0] 



48-9 



53-6 



55-1 



52-8 



51-4 



40-9 



46-8 



8 



[33-6] 



39-6 



29-2 



38-6 



42-3 



50-2 



53-7 



591 



54-7 



[47-5] 



331 



43-1 



9 



34-2 



34-1 



32-6 



[360] 



44.4 



49-7 



[53-8] 



53-9 



56-2 



42-6 



310 



44-9 



10 



31-2 



32-8 



34-7 



30-3 



41-9 



49-9 



54-3 



520 



[55-5] 



41-5 



38-0 



44-8 



11 



30-8 



33-6 



40-6 



30-1 



43-8 



[48-8] 



52-3 



55-9 



59-4 



4M 



42-9 



44-7 



12 



23-7 



[29-5] 



[35-8] 



31-2 



46-9 



45-7 



54-6 



57-3 



58-9 



36-7 



[36-7] 



450 



13 



335 



30-3 



36-8 



32-2 



50-5 



460 



56-1 



[56-0] 



51-3 



33-0 



38-5 



44-5 



14 



291 



23-9 



35-4 



46-7 



[45-3] 



51-4 



54-2 



54-3 



52-6 



33-5 



33-6 



459 



15 



[33-7] 



22-2 



34-8 



45-2 



45-3 



52-7 



55-5 



56-8 



56-3 



[33-3] 



36-5 



44-9 



16 



34-5 



23-6 



37-2 



[44-2] 



44-0 



51-7 



[54-0] 



59-7 



55-2 



30-5 



35-5 



37-5 



17 



37-7 



24-3 



43-7 



46-7 



41-5 



49-0 



54-3 



61-9 



[54-2] 



34-6 



42-9 



[430] 



18 



44-0 



17-5 



45-1 



45-4 



39-7 



[50-5] 



54-3 



60-8 



55-4 



31-4 



35-9 



43-2 



19 



44-1 



[28-1] 



[43-0] 



49-2 



39-5 



46-1 



49-9 



61-2 



49-6 



31-8 



[39-2] 



41-5 



20 



38-4 



32-2 



40-1 



44- 1 



43-5 



50-3 



49-5 



[55-9] 



56-3 



44-2 



39-3 



45-2 



21 



30-2 



350 



44-7 



49-1 



[43-0] 



530 



50-7 



49-7 



54-4 



43-4 



41-5 



40-3 



22 



[39-8] 



36-1 



47-0 



46-4 



44.4 



510 



53-3 



52-8 



50-7 



[40-1] 



400 



46-7 



23 



39-3 



35-6 



45'8 



[43-2] 



46-0 



52-5 



[52-5] 



48-9 



52-6 



461 



35-4 



47-8 



24 



43-8 



36-3 



40-9 



41-8 



451 



51-2 



49-3 



49-8 



[47-6] 



39-2 



30-7 



[45-0] 



25 



432 



33-2 



38-5 



41-0 



47-4 



[49-1] 



530 



53-5 



44-8 



35.7 



30-5 



47-9 



26 



42-8 



[33-2] 



[37-0] 



37-0 



501 



48-9 



59-4 



52-5 



42-7 



320 



[38-1] 



44-8 



27 



49-2 



32-7 



31-7 



41-2 



48-2 



46-8 



52-5 



[51-6] 



40-6 



32-8. 



46-8 



42-8 



28 



41-3 



31-9 



33-1 



420 



[45-8] 



44-3 



52-7 



54-9 



40-7 



41-2 



45-9 



43-2 



29 



[42-7] 





31-8 



41-9 



40-3 



48-1 



54-3 



503 



42-2 



[34-0] 



391 



43-9 



30 



40.5 





37-5 



[42-5] 



44-3 



511 



[53-5] 



48-6 



550 



331 



42-4 



42-2 



31 



44-1 





45-9 





44-8 





52-7 



54-0 





32-6 





[360] 



Mean 



36-8 



31-5 



371 



41-7 



44-2 



48-6 



53-6 



54-6 



52-4 



40-3 



38-3 



43-4 



The daily means have been obtained from the daily observations by the formulae already given, Table I.. 

 for the dry bulb thermometer. 



Annual Variation of the Temperature of Evaporation. — This follows the same law as the temperature of 

 the air, Table I. The greatest monthly mean is that for August, the least is that for February. 



The means for the meteorological seasons are as follow : — 



Winter, Dec, Jan., Feb., 37°-2 



Spring, Mar., Apr., May, 41°-0 



Summer, June, July, Aug., 52°- 3 



Autumn, Sept., Oct., Nov., 43°-7 



Jan., Feb., Mar., 35°- 1 

 Apr., May, June, 44°-8 

 July, Aug., Sept., 53°- 5 

 Oct., Nov., Dec, 40°-7 



The year 1843, 43°-54. 



