Meteorological Observations at Hudson, Ohio, — 315 
will be observed that these extraordinary. fluctuations occur 
chiefly ‘in winter ; not one occurred in the summer months. The 
same remark applies to the table of maxima and minima given 
before. , Ee nh aa 
& eS 
Beit sette | THERMOMETER AND HYGROMETER.  - P 
= |Therm.1 Hygro. Therm. | Hygro, Jf berm. | Therm. ; Hygro. Din. 
| March;-9-4.m: |-48:3°\'364 [-35.2, | a | 394 39.9. | 33.0 | 69> 
, p.m. | 5d.D | 41.4 | 43.5 | 29.5 46.8 48.6 | 35.0 \13.6 
April, 9 a.m. | 43.2> °35.7 1562 | 43.0 152.6 © 50:7. | 41.1. | 96 
gat p. Me 50.3.) 36.5. | 67.4 ee 3 59.0 | 43.0. 16.0 
[May, 94. m. | 49.8 | 429 | 61. 3.6 57.6 150.5 | 7.1 
po RB pew. | 53.6) 45.7 | 68. 5.6 63.6 | 51.5 124 
\June, 9 a.m. | 70.2.| 63.8} 61.3 | 6.5 
. oP me. | fom | OGL 63.8 | 9.7 
|July, 9 a.m. | 75.9 | 70.8 67.3.) 59) 
p.m. | 82.1. | 73.1 69.0 10.0 
Aug, 94. mM. | 72.9 | 672 641 | 60 
fe > Bete Bag 04 106 66.3 {10.4 
|Sept., 9a. m. | 613 55.2 54.8 | 4.0 
to. ans - M. pcs BP 35 : =| ae 10:6 
jOct., 9a. m, | 40.4 | 4b0 7 Z 7| 42 
zRB YP: M, Bre 48 ; ie ee 10.5 
Noy.y 9 a.m. | 32.0) ‘1342 | 30.0 | 42— 
~ 3p.m. | 388 | 306 | 408 | 307 | 91-4 
{Dec., 9a. m. | 222 | 18.4 | 23.8 °| 3.1 
} p. um. | 27.7 | 199. 4238 | 68— 
|Jan., 9a. x. | 28.0 | 23.9. 21.1138 
3 p.m. | 34.3 | 262 23.4 17.9 
Feb., 9.a.m. | 23.8 -| 23.4 +251 | 4.7 
eS S poms | 37.3. +268 26.5 '11.9. 
<a Average for the seasons. es ee 
= : Thermom. | Hygrom. Difference. 
“See ree ° ° Re | 
* 3 on ay 9 An Ale 49.4 41.5 49 
3 P.M. 57.1 43.2 13.9 
- ‘ A.M 70.4 64.2 2 
Sr. mo] 764 66.4 10.0 
2 We. ae ae ee 4.1 
3 P.M 55.2 | 45.2 10.0 
a, Bo 94.m.| 269 | 23.0 3: 
3 Pp. M. 33.4 246 fj 8.3 
‘ 94.mu.| 48.6 43.1 
3 P.M 55.5 - 44.8 10.7 
__ It appears, then, that spring is the driest season, and April the 
- driest month of the year; winter is the most humid season, and 
December the most humid month. The amount of vapor in the 
air varies but little with the hour of the day, the mean difference 
inthe dew point at 9 A. M. and. 3 P. M. being less than two de- 
Thalia “= 
