Meteorological Cbservations at Hudson, Ohio. 271 
The most remarkable atmospheric disturbances are confined to 
the cold months, and are altogether unknown in summer. 
THERMOMETER AND HYGROMETER. 
; 1 Mean 7 years. 
bars yer. | Ther. ygr.) Ther | Hygr. Diff. 
March, 9 a.m. (36°79 |29-3° {43-30 30 $90 
al P.M. |46-2 ‘g ‘1 46-2. |33:3 [12-9 
April, 94.m. |44-3 /38:1 [53-1 515 425 | 9-0 
* P.M. (51:2 |39°83 1616 59-4 (45-0 [14-4 
May, A.M. (56:2 [47:0 156-0 58-1 |49-9 | 8-2 
‘3 PM. |632 (486 {62-6 64-8 (51:2 13 
June, 9a.M. (725 [648 [65:3 | 8 61:0 | 6 
4 3P.M. i781 (667 WLS 36 (63:2 NO 
July, A.M. {723 (626 [71-1 72:9 |65-9 ( 
ss P.M. |78'7 (64:6 [76°5 78:6 |67-2 #11 
Aug. A.M. |70°3 (64-2 [68-5 69-8 (642 [5 
sai P.M. /77-9 (66:0 [74-3 66-0 }10- 
Sept A.M. |649 (623 {61:7 | 615 [58:1 | 3 
= P.M. (73:1 (64:5 [69-7 60-2 | 9- 
Oct. A.M. /446 (398 [47-5 0 1444 13: 
bed P.M. (52°7 i411 [57-4 55-4 145-9 | 9 
Nov A.M. |38:3 |34°9 (92-7 56 (BET TS 
& sp.mM. |42°3 (35-0 [40-5 415 |33-2 | 8 
Dec. 9a.m. [31-1 (28-7 [28-7 29:0 )25°9 13 
bis 3 P.M. |35°3 (29:1 [33-4 33:3 26:9 | 6-4 
Jan. A.M. |31-4 /26:5 [30-4 28:1 (23:3 | 4 
# P.M. |36°3 |265 212 33-7 248 | 8-9 
Feb. A.M. [31:38 |26°3 20-4 29-3 23:8 | 5 
= P.M. |39°7 |29°0 {30-1 1 1 124 
The following table shows the average for the seasons, for seven 
years, to which I have added the mean degree of humidity at 
Hudson, Toronto and Greenwich, complete saturation being call- 
ed unity. 
HUMIDITY. 
Seasons, Thermom. | Hygrom. | Diff’nce.|"fjydson. | Toronto. jGreenwich. 
Spring, 9 a.m.| 49°19 | 411° | 80° -759 
P. M. 
Summer,9 a.m.) 70°2 | 63:7 6:5 | ‘807 | -76 
3p. u| 76-1 | 65°56 7 10 
Autumn,9 a.m.) 48-4 | 44:7 | 
3 p.M.| 55° 
Winter, 9 4.m,| 28°83 | 24:3 
p.m.| 35:0 25°9 
Year, Qa.m.| 49-1 | 43-4 5:7 | 823 ‘79 | -840 
3p.m.| 558 | 452 | 10-6 | 697 685 | -765 
Thus it appears that the humidity of Hudson is generally in- 
termediate between Toronto and Greenwich; but Greenwich is 
drier than Hudson in summer, and Toronto is more humid in 
Winter. 
In order to determine the mean temperature of Hudson, we 
heed to know the relation between the mean temperature and the 
9 o’clock observation. 
