44 



RESULTS OF METEOROLOGICAL OBSERVATIONS 



From the above table we deduce the following results : — 



Least number of days (1.7) on which rain fell in February, greatest number (8.6) 

 in May; greatest number of days (7.2) on which snow fell in January; snow fell 

 as late as June 8th (in 1816), and as early as September 26th (in 1808). On the 

 average snow falls on a day in May once in five years, and on a day in October 

 once every other year. 



The average number of rainy days in a year is 64, varying between 39 and 95 ; 

 the average number of snowy days in a year is 30, varying between 19 and 50. In 

 a longer series these extremes may reach one-half and double their normal value. 



Table XIV contains the amount of rain and snow collected during each month ; 

 the latter was reduced to its equivalent in water by taking one-ienth of the observed 

 depth in inches. 







Table XIV. — Amount 



OF Rain and Snow Fallen (in 



inches). 







Jan. 



Feb. 



March. 



April. 



May. 



June. 



July. 



[August. 



Sept. 



Oct. 



Nov. 



Dec. 



Aggi-egate 

 for year. 



1808 











. . - 



3.03 



6.85 



4.51 



4.69 



5.69 



3.43 



4.12 



3.58 



7.34 



... 



1809 



3.20 



2-15 



2.90 



•0.05 



2.93 



3.60 



5.45 



2.48 



5.31 



2.15 



7.18 



4.91 



42.31 



1810 



0.20 



0.30 



5.40 



2.20 



2.09 



2.78 



2.99 



3.58 



1.38 



1.40 



4.57 



1.20 



28.09 



1811 



0.50 



4.50 











4.30 



2.00 



4.00 



3.61 



0.51 



2.61 



7.72 



1.30 







1812 



1.95 



3.00 



0.90 



4.91 



4.50 



6.72 



5.02 



3.69 



1.00 



4.58 



2.84 



1.60 



40.71 



1813 



2.90 



2.15 



5.08 



2.80 



2.74 



2.98 



3.28 



2.14 



0.67 



6.08 



6.07 



0.55 



37.44 



1814 



0.60 



1.50 



2.50 



4.93 



11.40 



3.60 



3.45 



7.31 



5.07 



0.54 



3.95 



3.35 



48.20 



1815 



2.37 



1.85 



1.16 



2.76 



1.80 



4.75 



1.49 



3.02 







1.22 



1.62 



2.35 







1816 



3.24 



2.41 



0.63 



1.20 



4.15 



1.41 



1.60 



2.13 



0.30 



5.99 



5.49 







... 



1817 



5.75 



4.10 



1.95 



1.94 



0.52 



5.09 



2.16 



3.35 







2.55 



4.70 



4.15 







1818 



4.40 



1.40 



3.60 



1.20 



5.80 



1.37 



2.98 



0.16 



5.07 



0.00 



0.20 



0.20 



26.38 



1819 







1.80 



5.00 



2.20 



... 











- - - 











0.30 











1820 



- - . 







0.30 



























... 



0.90 



1.05 







1821 



0.50 



2.10 



1.60 



0.60 



_ - - 

























3.10 





1822 



0.40 



1.70 























... 















0.60 



... 



1823 



1.90 



3.70 



3.80 



0.60 



--- 



... 



... 



... 



... 



... 



--- 



2.80 



... 



1838 



... 



... 



... 



... 



... 



... 



... 



... 



... 











0.90 



... 



1839 



2.45 



4.90 



6.08 



6.19 



4.06 



4.32 



8.43 



7.04 



2.18 



1.02 



4.10 



3.42 



54.19 



1840 



0.91 



2.25 



1.81 



6.00 



2.10 



2.83 



1.70 



5.82 



2.34 



1.71 



4.45 



4.20 



36.12 



1841 



4.20 



1.40 



4.40 



9.15 



3.27 



1.85 



1.80 



0.52 



7.60 



2.00 



3.99 



8.00 



48.18 



1842 



3.82 



5.69 



5.48 



3.75 



2.64 



3.00 



5.21 



5.73 



4.88 



0.71 



6.04 



8.03 



54.98 



1843 



4.15 



7.28 



7.75 



9.02 



3.83 



3.92 



3.26 



12.21 



0.88 



7.30 



5.23 



2.10 



66.93 



1844 



3.85 



0.80 



7.98 



0.28 



5.13 



2.83 



2.06 



4.24 



2.93 



7.58 



4.76 



7.88 



50.32 



1845 



8.06 



3.57 



3.13 



2.66 



6.53 



2.26 



8.67 



4.41 



3.85 



4.86 



17.75 



9.89 



75.64 



1846 



5.54 



1.80 



11.28 



2.09 



1.88 



2.67 



4.58 



2.05 



1.40 



1.95 



3.85 



4.37 



43.46 



1847 



5.95 



5.60 



2.40 



5.07 



3.14 



6.64 



2.75 



6.63 



5.49 



4.77 



5.78 



6.95 



61.17 



1848 



5.93 



2.24 



6.12 



1.53 



10.03 



3.75 



4.20 



3.33 



6.34 



7.67 



3.48 



4.75 



59.37 



1849 



1.85 



1.40 



4.15 



3.50 



2.70 



3.62 



1.72 



7.82 



2.40 



3.40 



3.65 



3.10 



39.31 



1850 



3.43 



1.73 



3.38 



5.00 



17.57 



4.99 



2.72 



4.37 



2.93 



4.74 



2.62 



3.96 



57.44 



1851 



3.89 



2.74 



0.80 



6.01 



2.37 



4.80 



4.78 



0.97 



2.11 



9.34 



5.89 



3.67 



47.37 



1852 



3.06 



6.90 



3.69 



7.83 



1.20 



3.15 



2.97 



6.03 



2.90 



3.23 



7.23 



7.08 



55.27 



1853 















... 















... 







... 















1854 



2.75 



4.87 



2.70 



0.65 



8.86 



5.66 



3.45 



0.28 



2.53 



1.30 



10.19 



2.90 



46.14 



1855 



5.68 



0.50 



0.50 



2.75 



2.78 



4.57 



4.37 



4.80 



1.40 



9.73 



3.40 



4.10 



44.58 



1856 



2.50 



0.50 



1.30 



1.72 



3.40 



2.05 



3.07 



6.32 



2.55 



3.59 



2.05 



3.73 



32.78 



1857 



3.10 



2.60 



4.90 



5.29 



3.43 



3.45 



2.40 



5.78 



0.70 



5.05 



2.08 



4.10 



42.88 



1858 



4.30 



2.08 



1.80 



3.67 



5.52 



1.95 



6.41 



7.76 



3.79 



3.09 



3.32 



1.85 



45.54 



1859 



3.60 



2.10 



8.15 



2.70 



3.59 



7.35 



1.35 



2.12 



5.89 



1.75 



4.45 



5.39 



48.44 



Monthly 





























average, 



3.24 



2.75 



3.72 



3.44 



4.55 



3.69 



8.65 



4.37 



3.03 



3.74 



4.65 



3.85 



44.68 



Years, 



33 



34 



33 



33 



31 



31 



31 



31 



29 



31 



33 



35 



32 



Average total precipitation during year, 44.68 inches ; least quantity observed 

 for any one year, 26 inches; and greatest quantity observed, 76 inches. 



