ATMOSPHEROLOGY.— rTEMrEKATURE. 



;63 



add 25.6 days (out of 35.8) of variable winds and 

 calms, being the proportion of frigid winds in 

 206.2 days, we find, that in the total period of 

 242 days, the temperature of the air was more or 

 less influenced by the ice during 173 days of that 

 period, whilst there were only 58.8 + 10.2 = 69 days, 

 in which the winds blowing from the south and east 

 (increased by their proportion of the variable winds 

 and calms) could not be said to be cooled by the 

 ice*'. Hence, as 173 (the number of days in which 

 the temperature was influenced by the ice,) is to 15° 



* These numbers are derived from Table B in Appendix^ 

 Na II. in the manner following. 

 Frigid Winds, No. of days thei 



being cooled by prevailed in 9 yrs. Mild Winds, blow- 



passing over ice. in part of April ing out of the Sea. 



ENEtoNEbN,(half) 17.0 



N N E to N b W 

 N N W to N W b W, 

 W N W to W b S, 

 W S W to S W b S, 



Proportion of variable 

 winds and calms, ha- 

 ving their tempera- 

 ture reduced by the 

 ice, 



51.8 

 40.2 

 25.2 

 13.2 



147.4 



No. of days they 

 prevailed in 9 

 years, in part of 

 April and May, 



S S W to S b E, 9.6 



S S E to 6 E b E, 12.5 



E S E to E b N, 19.7 



E N E to N E b N, (half) 17.0 



Proportion of variable 

 winds and calms wot 

 having their tem- 

 perature reduced by 

 the ice. 



58.S 



10.2 



69.0 



* Remark. — As the frigid winds blew 147.4 days, whilst the milder 

 winds blew only 58.8 days, the variable winds and calms may be consider- 

 ed as influenced by the frigid winds, more than the mild winds, or in the 

 proportion of 147.4 to 58.8. Hence, as (147.4 -f 58.8) = 206.2 is to 

 35,8, (the amount of variable winds and calms,) so is 147.4 to 25.6, the 

 proportion of the variable winds and calms to be added to the frigid winds. 



