14 Meteorological Observations. 
Mean annual barometer 29.37 inch. 
Mean annual thermometer 47° 17'. 
Annual amount of rain and melted snow 27.03 inch. 
Memoranda of 1847. 
January. — This month was colder than the corresponding 
months of the two preceding years, with a less amount of snow. 
The snow that fell during this month amounted to 4| inches, fall- 
ing at intervals, affording no sleighing, and soon washed away 
by the intervening rains and thaws. 17th. Temperature of the 
lake 36° of Fahrenheit. The temperature of the air at the same 
lime being 33°. 
February. — On the 3d of this month the barometer stood at a 
point the lowest which it has indicated for the past three years, 
being 28.33 inches. 15th. Meadow^ larks were seen. 17th. 
Temperature of the lake was 34° of Fahr. The temperature of 
the air at the same time being 30°. 27th. Wild pigeons made 
their appearance. Snow during the month amounted to 16 inch- 
es, but falling in small quantities at a time, and only affording 
sufficient for sleighing during the last week of the month. 
March. — 4th — 7th. A species of sparrow singing; ground be- 
coming visible, having had two weeks sleighing. 7th — 10th. 
Meadow larks lively, also peewits and golden woodpeckers. 
16th. Incessant streams of wild pigeons flying south from 9 A. 
M. to 2 P. M.. followed by a violent squall of snow from the 
north at 3 P. M. 16th — 19th. Red-winged starling arrived; 
splendid aurora borealis. 19th — 21st. Robins and blue birds 
firrived. 27th — 31st. Wintry weather, during which one of the 
severest storms of the year occurred; also a heavy fall of snow, 
accompanied with vivid lightning and heavy thunder. 
^pril.—rlst — 8th. Frogs heard; killdees and cedar birds ar- 
rived. 8th — 12th. Swallows abundant; ploughing commenced. 
15th. Snow squall, snow melted in about twenty minutes. 18th. 
Cold, thermometer 21° 22d. Butterflies, blue jays, and amphi- 
biae lively; poplars blossoming. 24th. Cow black birds arrived ; 
red maple and dog wood blossoming. Temperature of lake 44°; 
