VARIETIES OF SPEED.

A French scientific work states the ordinary rate to be:

	per second.
Of a man walking	4	feet.
Of a good horse in harness	12	”
Of a rein-deer in a sledge on the ice	26	”
Of an English race-horse	43	”
Of a hare	88	”
Of a good sailing ship	19	”
Of the wind	82	”
Of sound	1038	”
Of a 24-pounder cannon-ball	1300	”