—_ ae 
: 
114 REPORT—1845. - : 
TABLE I. 
Maxima of the Gaseous Atmospheric Pressure observed at Toronto between 
January 24 and September 15, 1841, corrected for the Annual and Di- 
urnal Oscillations, and reduced to the level of the sea. 
Month. Epoch. | Altitude. Month Epoch. | Altitude. 
| ad h in. h in. 
January ....| 25 18* | 29:912 | May......... 18 20 29°900 
- 28 8% | 29994 || _ ,, 29 0» | 29:932 
February.... 3 22* | 30098 | June......... 2 20° | 30°036 
4 7 22 30°245* || ,, 9 0 | 29-978 
% 17 12 29-994 pS 16 14 | 29-999 
F 24 0 30°011 E 20 16° | 29-923 
March......| 1 22 299900 | July... 2 208 30°067 
af | 420° | 30345* % 7 18 29°868t 
< |; $18 29-977 5 10 42 | 29-986 
e | 9 20° | 30-019 93 16 222 | 29-980 
7 | 11 8* | 380°103* s 20 4 30°048 
BS | 16 20 30°383* is 26 0 30°003 
. / 30 6° | 30-025 » 27 22 29:988 
April s.ussss 2 18 29°914 | August...... 1 223 | 29-950 
“ 5 22 SY ali | ie 11 14% | 29-942 
;, 15 2 30:410* | ,, 15 18 29°923 
* 22 0 30°245* > 19 16% | 29°853+ 
ie 27 18" | 29:875t ||, 23 18 30°156* 
May..-.sss-s 3 6 30°029 |September | 14 18 30:148* 
| 620 | 30011 | 
Upon carefully collating the Greenwich observations for the same period 
and reducing all maxima above 29:800 to the level of the sea, we obtain the 
results recorded in the following Table. ‘The same frequency of rise above 
the gauge-point (30:000) noticed at Toronto is observable at Greenwich; 
and to a certain extent there is some agreement in the epochs of the maxima; 
epochs differin.; less than 30 hours, both series being reduced to Gottingen 
mean time, are marked (*) in both tables. 
TaBLe If. o 
Barometric Maxima observed at the Royal Observatory, Greenwich, between 
January 23 and September 20, 1841, reduced to the level of the sea. 
Month. Epoch. | Altitude. Month. Epoch. | Altitude. 
dh in. dh 
January ...| 24 22% | 30437 || June........{ 3 228 
‘ 28 0? 304 J 8 10 
x 31 18 “452 " 13 20 
February 3 4 ‘114 % 15 22 
ra 10 0 “123 > 21 208 
i‘ 21 22 | 30-452 . 27 14 
March...... 3 227 | 29-988 diily cease. 2 128 
Wy 10 22° | 30572 . 9 128 
M4 24 0 | 30-329 " 16 208 
nae 28 0 | 29-998 a 24 10 
5) 30 2? | 29°998 || August ....) 1 20% 
| April ....... 9 22 80-183 > 12 10° 
ee 13 10 202 " 18 228 
bei 18 0 “O11 7 26 10 
> | 26 10 +180 September; 1 0 
| 4 27 228 294 A, | § 20 
a4 29 20 240 * | 10 22 
May «e+... | 10 0 235 w | 16 22 
3 13 20 44] » 19 22 
+ 23 20 |- -260 | 
= 28 22" | 30-168 
#® Maxima more than ‘1 inch above 30 in. 
+ Maxima more than ‘1 inch below 30in. ~ 
