460 



METEOROLOGICAL EEPORT, 1860, 



Height above Sea 



DURHAM OBSERVATORY. 



352-4 Feet. 



Mean of all 

 Maximum 

 Readings. 



January 



Februaiy 



March 



April 



May 



June 



July 



August 



September . . . 



October 



November . . . 

 December 



Mean for Year 



43-16 

 47-61 

 42-86 

 57-06 

 51-73 

 63-56 

 73-01 

 66-94 

 61-56 

 53-82 

 46-54 

 39-86 



Mean of all 

 Minimum 

 Readings. 



Mean 

 temperatui'e 

 oftheMonth. 



34-56 

 37-82 

 33-22 

 38-97 

 39-29 

 44-83 

 51-13 

 48-07 

 48-60 

 41-78 

 35-97 

 31-42 



38-86 

 42-72 

 37-54 

 48-02 

 45-51 

 54-20 

 62-07 

 57-51 

 55-08 

 47-80 

 41-26 

 35-64 



47-18 



Mean of 

 previous 

 10 years. 



86-77 

 38-90 

 39-14 

 45-72 

 50-63 

 56-18 

 58-85 

 57-87 

 54-72 

 48-42 

 41-20 

 38-78 



47-26 



Htgeosibteical Results. 



January 



February 



March 



April 



May 



June 



July 



August 



September 



October 



November 



December 



Mean for Year 



Mean 

 temperature 

 of the Air. 



39-57 

 42-94 

 37-08 

 47-34 

 44-64 

 52-68 

 60-86 

 56-83 

 54-61 

 47-20 

 41-60 

 36-57 



46-82 



Mean 

 temperature 



of 

 evaporation. 



38-06 

 40-53 

 35-17 

 44-14 

 42-13 

 49-00 

 56-43 

 52-86 

 51-41 

 45-10 

 39-50 

 34-98 



44-11 



Mean 

 temperature 

 of dew point. 



36-11 

 37-64 

 32-48 

 40-59 

 39-19 

 45-29 

 52-58 

 49-21 

 48-31 

 42-74 

 36-90 

 32-76 



41-15 



Relative 

 Humidity. 



87-9 

 81-5 

 83-8 

 77-9 

 81-2 

 76-6 

 74-3 

 76-0 

 78-8 

 85-5 

 84-1 



81-2 



These results are reduced from the readings of the dry and wet bulb 

 thermometers, corrected for diurnal range by Glaisher's tables ; the 

 observations being taken at 10 a.m. and 10 p.m. 



