232 Prof. B. Stewart and Mr. W. L. Carpenter. [Feb. 25, 



nearly freed from disturbance, and in the next place the two series are 

 very much alike in type. 



13. In order to compare the Inequalities of Table V we may con- 

 sider the Prague series as stationary and the Toronto as movable, and 

 take the algebraic addition of the two series in various relative posi- 

 tions. For instance, Toronto pulled backwards one or two divisions 

 (days) to the left; both together; Toronto pushed forward 1, 2, 3, 

 4, 5, &c, divisions to the right. The algebraic sum of the two will 

 give the greatest range when the corresponding phases of the two 

 Inequalities are most nearly together. 



The following is the result obtained by this method of com- 

 parison : — 



Table VI. 



24- day Inequalities. 



J oint area 

 of both. 



Toronto 2 to left 594 



„ 1 „ 676 



Together . 738 



Toronto 1 to right 776 



„ 2 „ 804^1 



v 3 „ 796 



„ 4 „ 794 



„ 5 „ 794 



„ 6 „ 792 



„ 7 „ 770' 



» 8 „ 742 



„ 9 „ 726 



„ 10 „ 694 



26-day Inequalities. 



Joint area 

 of both. 



Toronto 2 to left 1322 



„ 1 „ 1448 



Together 1560 



Toronto 1 to right 1628 



2 „ 1658 



3 „ 1670 



„ 4 „ 1642 



5 „ 1574 



6 „ 1532 



„ 7 „ 1500 



For the 24-day Inequalities the position of maximum area is some- 

 what undecided, the numbers bracketed being practically the same. 

 On the whole we may consider that the middle point of this region, 

 which denotes " Toronto 4 to the right," expresses the nearest coin- 

 cidence in phase. 



For the 26-day Inequalities the maximum is when Toronto is 

 pushed three divisions to the right. We may therefore state that as 

 far as this comparison is concerned, a given phase occurs at Toronto 

 three or four days before it occurs at Prague. In this preliminary in- 

 vestigation no account has been taken of the difference in longitude 

 "between the two stations as affecting the strict simultaneity of the 

 diurnal ranges. 



Comparison between Temperature-ranges and Decimation-ranges. 



14. The Toronto temperature-ranges and the Prague declination- 

 ranges are for the same series of 36 years, and if we compare 

 together the corresponding Inequalities of these ranges as given in 

 Tables I and III, we obtain the following result by taking the 

 sums : — 



