The boy to whom the bridge belongs receives a marble from each boy who shoots, and gives to each the number of marbles over the arches should they pass through them.
BONCE-EYE.
Bonce-Eye is played by each player putting down a marble within a small ring, and dropping from the eye another marble upon them so as to drive them out, those driven out being the property of the Boncer.
The law of falling bodies may be well illustrated by this game. It is one of the laws of motion, that the velocities of falling bodies are in proportion to the space passed over; and the space passed over in each instant increases in arithmetical progression, or as the numbers 1, 3, 5, 7, 9.
By the annexed diagram it will be seen, that if a marble fall from the hand at A, when it reaches B it has only the quantity of velocity or force expressed in the angle 1; but when it passes to C, it has the quantity expressed in the three angles 3; when it passes to D, it has the quantity expressed in the angle 5; when it passes to E, it has the quantity expressed by the seven angles marked 7. Thus we may understand why a tall boy has a better chance at Bonce-Eye than a short one.
It is found by experiment, that a body falling from a height moves at the rate of 16-1/12 feet in the first second; and acquires a velocity of twice that, or 32-1/6 feet, in a second. At the end of the next second, it will have fallen 64-1/3 feet; the space being as the square of the time. The square of 2 is 4; and 4 times 16-1/12 is 64-1/3; by the same rule, it will be found, that in the third second it will fall 144-3/4; feet; in the fourth second, 257-1/3; and so on. This is to be understood, however, as referring to bodies falling where there is no air. The air has a considerable effect in diminishing their velocity of descent.
SUN AND THE PLANET TAW.
