REV. R. F. WHEELER, M.A., AND DR. HOOPPELL. 493 



and from the table just given, the following, among many other 

 interesting facts, may be deduced. 



In the eighteen years, 1854 to 1871, at Wylam : — 

 The warmest years were 1857 and 1868, with mean daily 

 temperature 49*2. 



The coldest year was 1860, with mean daily temperature 44*9. 



The warmest month was July, 1870, with mean daily tempe- 

 rature 62*2. 



The coldest month was February, 1855, with mean daily tem- 

 perature 27" 6. 



The warmest day was August 2nd, 1856, with mean tempera- 

 ture 79. 



The coldest day was January 18th, 1861, with mean tempe- 

 rature 8. 



The highest point reached was 92-0, on August 1st, 1856. 



The lowest point fallen to was 1*5, on February 17th, 1855. 



The average date of warmest day was July 21st, with average 

 mean temperature 68'9. 



The average date of coldest day was January 15th, with aver- 

 age mean temperature 20 '5. 



The average date of yearly maximum was July 16th, and 

 average yearly maximum 82-5. 



The average date of yearly minimum was January 20th, and 

 average yearly minimum 11 '0. 



The greatest yearly range of absolute temperature was 85, in 

 1856 ; the least, 59, in 1863. 



The greatest yearly range of mean daily temperature was 64-5, 

 in 1856 ; the least, 37, in 1862 and 1863. 



The extreme range of absolute temperature, in the whole 

 eighteen years, was 90*5 ; the extreme range of mean daily 

 temperature, in the same period, 71. 



The year with the greatest mean daily range was 1855, the 

 mean daily range being 18*2 ; the year with the least mean daily 

 range was 1867, the mean daily range being 14*3. 



