6 LETTER FROM M. E. BOURGEAU. 
Extremes of Atmospherie Temperature (Maximum and Minimum) 
for every Twenty-four Hours. 
| Date Max. Min. Date. | Max. Min. | Date. | Max. | Min. 
1857. o o 1857. o o 1858. o о 
М№оу.12 472 30°2 |Dec. 9) o'o 6*9 || Jan. 4| — ro 28:0 
| 13 g'o 272 30| — 16:7 92 5| —14'1 7o 
| 14) 1258 3370 11 47 16°0 6| 130 25'0 
15|) 180 350 12 5.0 330 7| —279 | — 31 
16) 20°8 344 13 8-0 27'0 8 — 13:0 | — o2 
17| II? 310 14 — r$ 120 9| — 1079 18*9 
| 18| — 42 15`0 15 4°90 j- 350 IO| — 2'I 1470 
| 19| оо 145 | 16 — 40 | 24:6 11| —15'0| 180 
| 20| 10°2 411 | 17, — 10:0 8-1 12, — 3480 | — 15'0 
| 21 0*3 6o 18 о-о 19°6 | 13| —40°o | —15'0 
| 22 2°0 11'1 19 130 26'0 | 14 — 1470 26:2 
| 23| 1:9 340 20| 12'I 2r'o 15| —29'2 | — r3 
| 24| 100 25'5 21 зо | 240 16, —114 | — 13 
| 25 g'i 28°0 22) 24°2 | ro 17| — 62 153 
|  26| тоо | зоо 23 60! 23:8 18) 52| 261i 
27| 228 | 262 24| —1q0 | 55 19) 62| 153 
28| 152 22'0 25 — 2'0 152 20 2:6 24*5 
29| 158 175 26 50 32'0 21| — 272 16:7 
ol 12°5 1770 27 — TO 14°6 22 5'2 2270 
Dec. 1| 149 18°9 28| — 6'9 14*9 23| —11°6 4^5 
2 5'5 17'0 29| — 22 3272 24| —14*5 22'0 
3| — 4'9 8o 30 Е] 18:5 25| — 8'g 13:3 
4 — 5'5 172 31| — 70 19°8 26| —13°8 о 
5 52 16°2 || 1858. 27| —12'3 5'0 
6 1'5 23°0 |Jan. 1| — 3'5 21'9 28| —14°7 5:0 
7| — 130 5'0 21 gt 40'0 29 | 
8 2'0 8*5 3| 290 45°0 
Continuation of the Observations on the Temperature of the Earth 
and of Forest-trees, made at Carlton, on the Saskatchewan. 
Date. 2 feet. 3 feet. Populus. Abies. Atmosphere. 
1858. 
Febo 1 ar 26-0 Le. 15°0 2°0 
2 21° 26°0 — 7o — 12'0 — 99 
3 21'0 25'8 — 2*5 ee. o'o 
4 21'0 25°6 " Too 258 
5 210 25°3 eA 20°5 260 
6 21'0 25'0 15°5 18-5 113 
7 22°0 25:8 e£ — $5 — 143 
8, 21'0 25'8 — 42 —15'0 — 112 
9 20°7 25°2 —13'0 ED —25'0 
то 19'4 25'0 —20'0 e$ —22'0 
1I, 1872 24°5 —24'0 e.. —23'7 
12 1775 | 240 |  —2$0 eA —27°3 
13 15'0 24°0 OD — 2070 —29°3 
14 142 231 The mercury shrunk into —360 
135 215 the bulb 01373 
16 117 21°0 . —153 
| 17 11°$ 204 [| — 95 — I4*0 — 87 
| 18 P A me "o — 60 
| 19 13°0 | 19°4 “+. ‚б. — 74 
