120 P. E. Chase on Terrestrial 
“Third, the near agreement in the number of Irregulars 
for Nadir For ce with half the anne of Irregularities for Wet 
erly or for Northerly Force ;” pp. 641-2. 
_ 4, Tables X and XI (pp. 43-4) har that the disturbancesate 
greatest in the winter months and in the night hours. Tabled — 
also appears to indicate minima of fluctuations and inequalitie 
in months when there is the greatest uniformity of pail 
and maxima when the changes of temperature are greatest 
most frequent. 
Tables XI and XII furnish the materials for the following | 
synopsis: ; 
Sums of Wave | g of | Mean Ir- 
Forces, disturbance. Jy, regula aii- ws ave ri | dome regularity 
+ as turbances 
eee 
= | (Time of max. 204, | 10h.) luk, | 20h. oh 15h. | 9 
EY SE Be Time of min. | 102. | 21h, 3 OA, Th. 
$é°} sos, at ola 4) 1170 | 2191) 1976 400142 00104 00162 
=~ | Amt. of min.,| -0165 | -0083 | -0346 |--00165| -00056 | 00074 
= (Time of max., 12h, 8 5h, Oh 15h. 
=% ae Tine of min., | 227 bh. 83h 22h, -2h. 3h. 
ee 4 of max.,| “1407 | -2917 | °1754 (+00088| -00168 | 0144 
Z oP min., | 0088 | 0674 |} °0441 |--003) 0093 | ‘000 
. . {Time of may, 7h. | 144. | 10h, Oh, wh Oh. “he 
3% 4 Time of min,| 22h, | iA. 3h, Wh. 2A. 3h. eS 
ae shes wax.,| 3976 | 3133} “1241 |+-00570 00368 00180) ae 
CAnto of min , | 0355 | 0306 | -0177 |--00380/ -00157 | ‘v0074 : 
“The Soli-tidal character of the principal characteristics # | 
the occasional Magnetic Storms, as to frequency, magnitude, 1 
ing ag of wave disturbance, ee Irregularities 
n this Table.’ (Table XII) p. 
maxima vn minima, the pao of which will beam 
teresting, _ = laws of the principals have been well ascél” 
tained ial defi 
6. “In regard i the Wave-disturbance: for Westerly fat 
the aggregate is + from 17! to 64, — from 74 to 165; ford . 
erly Force, the aggregate is + fom 3h.to 5h, — from 6b to “~ 
and for Nadir Fores, the aggregate is + from 23h to 104, - 
114 to 225;” p. 644. 
