430 Meteorological Observations. 



tion solicited in the queries of this Circular, respecting the dis- 

 tricts in which they may reside, in any part of the United States, 

 or of the Canadas. In doing tliis, we ask the favour of its being 

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 jected us. Editor. 



METEOROLOGICAL OBSERVATIONS, 

 Made at Wilmington, Delaware, hy Henry Cribhons, M.D. 



SUMMARY FOR JANUARY, 1832. 



Therm. Barom | Proportion of clear weather, days 16 



Average at sun-rise, 24°.77 m.29.90 Proportion of cloudy, 15 



Average at mid day, 36°.52 29.88|Whole days clear, 12 



Average at 11 o'clock, Days on which rain fell, 5 



P. M. 27°.71 29.88 Days on which snow feU, 2 



Monthly average, 30°.64 29.89!Quantity of rain, in. 4.66 



Ma.ximum, 19tli, 57°. 27th,30.30 Quantity of snow, 7. 



Minimum, 27th, 6°. 8th,29.04, Quantity of water, 5.50 



Range, 63°. 1.26 Northerly winds prevailed, days 14 



Warmest day, 19th 49°. 5 Easterly, 8 



Coldest day, 27th, 1°. [Southerly, (S. to W.) 9 



An aurora on the 22d, followed immediately by easterly winds, and on the 

 25th, by a snow storm from the north. No electrified clouds. Several 

 moderate rains, and but little snow. Winds generally light and changeable. 

 The early part of the month, a continuation of tlie winter of the preceding 

 December; afterwards the weather gradually moderated, and two weeks 

 of pleasant sunshine dissipated almost every trace of the previous cold. 

 The Christiana creek, and the Delaware river, at Philadelphia, opened 

 about the 18th, after having been closed six weeks. But just as the ice had 

 disappeared sufficiently to admit of navigation, winter suddenly returned, 

 with a severe snow storm on the 25tli ; on which day the thermometer fell 

 from 36°, at sunrise, to 12°, at 11 o'clock, P. M. The next morning the 

 mercury was at 4°; 9° at noon, and had fallen to 2° below zero at 11, P. M. 

 On the 27th, it stood at 6° below zero at sunrise, 8° at noon, and 2° at night ; 

 and on the morning of the 28th, 2° below zero at 2 o'clock, and 2° above at 

 sunrise. The range of the thermometer, for a continuous period of 60 hours, 

 was between 6° below and 9° above zero. By this extreme effort. Winter 

 seemed to have exhausted himself Navigation was again open in little 

 more than a week, and no very severe cold was afterwards experienced. 

 There were three easterly storms during the month, all accompanied with 

 rain or snow. 



Erratum. — In the summary- for December, published in the last number 

 of the Journal, the quantity of rain is stated at two inches, instead of two- 

 tenths of an inch. 



