466 MOTION. 
also, depends on this height. When the centre 
of gravity is most cx gree the swinging leg 
must be placed on the ground in the vertical 
position, instead of being suffered to pass be- 
Taste 7. 2% 
Measure of the time of vibration of the 
and of the shortest time of a step i 
ferent persons. os 
yond it, as it does in slow walking. In quick Duration of on 
walking the propelling leg acts more obliquely Persons. Swinging. Step. 
on the Sank, which is more inclined, and RY: 
forced forwards more rapidly than in slow s ‘ 
walking. The time when both legs are on the A. 0.730 0.375 
ground diminishes as the velocity increases, B. 0.662 0.337 | 
and it vanishes altogether when the velocity is Cc: 0.730 0.372 — 
ata maximum. D. 0.680 0.340 
0.696 0.348 © 
: 0 746 0.341 — 
‘hae ania G. 0.740 0.380 
Measure of the velocity in quickest walking. H. 0.690 0.370 
Space traversed 47 metres. z. 0.663 0.337 
K. 0.678 0.345 
E. 0.724 0 362. 
Number of Steps. Time. M. 0.743 0.374 
53 17.57 Mean. 0.7068 =| 
54 18.00 
55 18.20 Taste 8. 
54.5 18.18 Measure of the natural gait in 
55 18.42 with different velocities on the entire 
54.5 18.00 of the foot. 
se nas Space traversed 43.43 metres. 
a . . 
54 17.477 oe 5 a 4 
54 18.05 Steps. | Time. | Steps. | Steps. | Ve 
E s met. 
oe ie fe 51 | 18.12 | 0.335 | 0.851 
52 | 20.48 | 0.394] 0.835 | 2 
From this table we observe that the velocity 54 22.55 | 0.417 | 0.804 } 1. 
in quickest walking is at the rate of 2.608 54 24.83 | 0.460 | 0.804 
metres, or about 7.897 feet per second. In 55 26.38 | 0.480 | 0.790° 
conducting their experiments the MM. Weber 57 28.90 | 0.507 | 0.726 
found that the velocity was constant, whether 60 33.70 | 0.562 | 0.724 
the power of the muscular system had been 61 34.92 | 0.572 | 0.712 
renovated by repose, or exhausted by fatigue, 65 39.27 | 0.604 | 0.668 
and therefore they concluded “ that so long as 66 | 41.60 | 0.630 | 0.658 | 1. 
the muscles exert the general force necessary 69 45.72 | 0.663 | 0.629 
to execute locomotion, the velocity depends 69 46.07 | 0.668 | 0.624 
on the size of the legs and on external forces, 73 53.02 | 0.726 | 0.595 
but not on the strength of the muscles.” 76 57.72 | 0.760 | 0.572 | 0. 
82 | 69.40] 0.846 | 0.530 
80 68.78 | 0.860 | 0.543 | 
Taste 6. 88 | 79.67 | 0.908 | 0.493 
Measures of military marching. 97 93.67 | 0986) a 
Space traversed 43.43 metres 101 | 104.08 | 1.030 | Casey 
f vi 109 |114.40 | 1.050 | 0.390 
a gd hte Length. TABLE 9 — - 
o o in . . . - 2h 
Steps. | Time. Step. | Metres. | Velocity. Experiments on the time during which 
rests on the plane of position in 
degrees of velocity. za 
49.3 | 21.50 | 0436} 0881 | 2.020 Duration | Length i 
52.3 | 27.17 | 0.519 | 0.831 | 1.598 ° of ae 
54.7 | 32.35 | 0.592 | 0.794 | 1.342 Step. |. Step. | Velosea aim 
61.7 | 43.57 | 0.706 | 0.704 | 0.997 met. 
68.8 | 55.08 | 0.801 | 0.631 | 0.789 0.344 | 0.790 2.30 
74.2 | 64.02 | 0863 } 0585 | 0.678 0 376 0.804 214 0. 
87.1 83.72 | 0.961 | 0.499 | 0.519 0.429 0.755 1.76 
100.5 | 105.16 | 1.046 | 0.432 | 0.413 0.523 0.657 1.27 
111.5 | 124.00 |} 1.112 | 0.390 | 0.350 0.742 0.659 0.89 7) 
~ <a 
