306 



Mr. R. H. Scott. The Variability of the [Mar. 27, 



in November, 1880, and the lowest, o, 7, for Valencia in July, 

 1879. 



In the detailed table at the end of this section, Table III, the mean 

 values for each month will be found. 



It has been suggested that it would be important to investigate 

 as to whether temperature changes in these islands .show more sudden 

 positive than negative alterations. In Hindostan (Calcutta and 

 Lahore) Mr. Blanford, in his ' Climate and Weather of India,' p. 12, 

 states that there " rapid falls of temperature are between two and three 

 times as frequent as rises, and, on the whole, greater in amount." 



A preliminary inquiry as to all the changes during a month led to 

 no decisive result, the number of + signs and of — signs being nearly 

 equal. It therefore seemed best to take only the changes exceeding 

 5°, and, further, to mark specially those above 10°, 15°, and 20° re- 

 spectively. 



The following table, Table II, gives the total number of changes 

 exceeding 5° during the entire series of years, with the mean amount 

 of the change arranged in two sets of two columns each, marked 

 R. and F. for rise and fall. Underneath these figures is given the 

 number of changes exceeding 10°, &c, but without mean values. 



Table II. — Variations exceeding 5°, arranged according to sign. 

 Valencia. Armagh. 



Exceeding 

 10° 

 15 

 20 



E. 



F. 



E. 



F. 



No. 



Mean 

 value. 



No. 



Mean 

 value. 



No. 



Mean 

 value. 



No. 



Mean 

 value. 



167 



3 

 1 



6'7 



167 

 1 



6 2 



345 

 25 



6-8 



338 

 16 



6-7 



Glasgow. Aberdeen. 



Exceeding 

 10° 

 15 

 20 



E. 



F. 



E. 



F. 



No. 



Mean 

 value. 



No. 



Mean 

 value. 



No. 



Mean 

 value. 



No. 



Mean 

 value. 



323 

 29 



7-0 



346 

 20 



6-7 



334 

 22 

 "l 



7-0 



325 



25 

 2 



7-0 



