162 P. E. Chase on Meteorological Comparison. 
In order to ascertain whether the correspondence, which is 
thus shown to exist between the daily means of the different 
elements, can also be traced in the hourly means, I noted the 
character of the undulations for several entire weeks, selecting 
observations at different seasons, in such a manner as ht 
would give a pretty correct approximation to the average of 
each of three years. Considering the increasing waves as posi- 
tive and the decreasing as negative, I obtained the data whi 
II, 
are summarily detailed in Table I 
TABLE IIT. 
Correlations of Temperature, Gravity, and Magnetism, in the Hourly 
Means at Toronto and St. Helena. 
|B. TH. & Vy B. dH T.&H)B.& ViT. & V. 
0.) C. 0) C. 0/6. 0. 
T. & D.. 
G&G: 0.) C 
ToronTo. | 
Ist year. 197 242,208 issio12 232/227 282/201 176162 229225 211195 260 
2d “ (202 234170 202.246 217/197 234/188 173/165 192\295 217/189 238 
3d“ 191 232171 128,218 211/192 2591155 126/120 172\230 202/200 248 
: ee eee 
Total, 590 708549 518/676 660/616 725|544 474.447 5y3\6s0 630584 746 
225 205/198 204 
248 174/189 211 
220 199/181 210 
Sr.HELENa. ] 
Ist year./198 997/125 179/281 200/217 187/199 183l179 131 
2d “* /199 232121 203/247 189/250 164138 196/173 145 
3d_“ {190 203/143 182/244 194/249 159/142 1941187 126 1 
Total, |587 662/389 564|722 583/716 510/409 573/532 402|693 578/568 625 
tions of temperature than the barometric pressure; and tha 
at St. Helena the relation of the barometric to the thermo 
Inetric movements is less marked than those of either the hori- 
