1879.] 



Report to the Committee on Solar Physics. 



309 



Table V. — Algebraic sum of Kew and Utrecht Temperature 

 Inequalities. 



Kew and Utrecht (Utrecht 1 division to right) . . =165950 



(together) =172807 



(Utrecht 1 division to left) . . =174*776 



(Utrecht 2 divisions to left) . . =173997 



(Utrecht 3 divisions to left) . . =164915 



It thus appears that we get the greatest sum, and consequently the 

 nearest approach to similarity of phase when we push Utrecht back- 

 wards or to the left a little more than 1 division, in other words 

 similar phases take place in Utrecht about a day and a-half after they 

 take place in Kew. 



8. In adding together the results of the three observatories, we shall 

 therefore push Toronto 8 divisions to the right, and Utrecht 1 

 division to the left. 



By doing so we obtain the following table : — 



Table "VI. — In which Toronto, Kew, and Utrecht are added together 

 as now described and the sums divided by 3. 



Divisions 



Magnitude 



Divisions 



Magnitude 



from normal. 



of inequality. 



from normal. 



of inequality 



-7-0 .. 



. . . 1533 



o-o . . . 



. . . 2709 



—6'5 . . 



. . . 2199 



+ 0-5 ... 



. . . 3001 



-6-0 .. 



. . . 3208 



+ 1'0 ... 



. . . 2549 



— 5 "5 .. 



. . . 3642 



+ 1-5 ... 



. . . 1734 



-5-0 . . 



. . . 1995 



+ 2-0 ... 



. . . 1521 



-4 5 .. 



. . . 2362 



+ 2-5 ... 



. . . 2090 



-4-0 



. . . 2616 



+ 3-0 ... 



. . . 2412 



-3-5 .. 



. . . 2012 



+ 3-5 ... 



... 2331 



-3 .. 



. . . 1439 



+ 4-0 ... 



. . . 2245 



-2 5 .. 



. . . 2344 



+4-5 ... 



. . . 3476 



-2-0 



... 3571 



+ 5-0 ... 



. . . 3788 



-1-5 .. 



. . . 3808 



+ 5-5 ... 



. . . 3620 



-1-0 



. . . 3411 



+ 6-0 ... 



. . . 3280 



-0-5 ... 



. . . 1558 







9. The results of this table are exhibited in Plate 1, fig. 1. It will 

 be seen that the Kew curve (Plate 1, fig. 2) is remarkably like the 

 above mean curve ; the Utrecht curve (fig. 3) is not quite so like 

 the mean as the Kew curve, while the Toronto curve (fig. 4) is the 



