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34

Art of Travel.

Tables for the easy determination of the Rate of Travel.
TABLE I.-Pace or Stride of Man, Horse, Camel, &c.

 o 6 ~, mom,; oho aim C a w0 m a0 oBG a~   `" 0 o I F y~ y•~   ado a a a~   wow `oa   `~ ` ~p I 1 j 0.57 11 6.2 21 11.9 31 17.6 I   41 23.3 2 1.13 12 6.8 22 12.5 32 18.2 42 23.9 3 1.70 13 7.4 23 13.1 j 33 18.4 43 24.4 4 1 2.27 14 8.0 24 13.7 i! 34 19.3 44 25.0 5 2.84 15 8.4 25 14.3 j 35 19.9 45 25.6 6 3.41 16 9.1 26 14.8 1 36 20.5 46 26.1 7 1 3.98 17 9.7 27 15.4 1 37 21.1 47 26.7 8 ! 4.55 18 10.2 28 15.9 1 38 21.6 1 48 27.3 9 5.11 19 10.8 29 16.4 1 39 22.2 49 27.8 10 5-68 20 11.4 30 17.0 40 22.8 50 28.4

TABLE II.-Radius of Carriage Wheel.

 0 b b   ©O   ! I ~   m 0   d   _ p ~ ~,^   ^   ! 0U   ~n~   ~"RnY, o°_o aM   H 1.0   u:   San 1   3.57 11   39.3 1   21 75.0 2   7.14 12   42.8 22 78'5 3   10'71 13   46'4 23 82.1 4   14.28 14   50.0 24 85'7 5   17.85 15   53.6 25 89'2 6   21.42 16   57.1 26 92.8 7   24.99 17   60.7 27 96.4 8   28.56 18   64'3 28 10010 9   32.13 19   67.8 29 103.5 10 135.70 1 20   71'4 30 107.1

b. Men the length of Pace is unknown till after observation. -In this case, the following plan gives the rate of travel per hour, with the smallest amount of arithmetic.

For statute miles per hour-Observe the number of paces (n) taken in 5.7 seconds : let i be the number of inches (to be subsequently determined at leisure) in a single pace; then

n i is the rate per hour. 100

For geographical miles per hour-The number of seconds to be employed is 5. This formula is therefore very simple, and it is a useful one. (A statute mile is 1760 yards, and a geographical mile is 2025 yards.)