Farm drainage: The Principles, Processes, and Effects of Draining Land with Stones, Wood, Plows, and Open Ditches, and Especially with TilesFrench, Henry F. (Henry Flagg)
Science
Farm drainage: The Principles, Processes, and Effects of Draining Land with Stones, Wood, Plows, and Open Ditches, and Especially with Tiles
French, Henry F. (Henry Flagg)
Drainage
January 3.36 1.46
February 3.32 1.25
March 3.44 1.17
April 3.60 1.28
May 3.63 1.64
June 2.71 1.74
July 2.86 2.45
August 3.61 1.81
September 3.33 1.84
October 3.46 2.09
November 3.97 2.22
December 3.74 1.74
----- ----
Spring 10.67 4.09
Summer 9.18 6.00
Autumn 10.76 6.15
Winter 10.42 4.45
----- -----
Year 41.03 20.69
Another very striking difference between the two countries is shown by a
comparison of the quantity of water falling in single days. The
following table, given in the Radcliffe Observatory Reports, Oxford,
England, 15th volume, shows the proportion of very light rains there.
The observation was in the year 1854. Rain fell on 156 days:
73 days gave less than .05 inch.
30 " between that and .10 "
27 " between .10 " .20 "
9 " " .20 " .30 "
9 " " .30 " .40 "
4 " " .40 " .50 "
1 gave .60 "
2 " .80 "
1 " 1.00 "
Nearly half the number gave less fall than five-hundredths of an inch,
and more than four-fifths the number gave less than one-fifth of an
inch, and none gave over an inch.
There is more rain in the United States, by a large measure, than there;
but the amount falls in less time, and the average of saturation is
certainly much less here. From manuscript records, furnished us by Dr.
Hobbs, of Waltham, Mass., we find, that the quantity falling in the year
1854, was equal to the average quantity for thirty years, and that rain
fell on fifty-four days, in the proportion as follows:
Number of rainy days, 54; total rain-fall, 41.29.
Public-domain text, read in full here on John Shaqi.
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