This spring, or rather these two springs, are two holes, each about two feet diameter, a stone's cast distant from each other.

No auriferous country was found, but some fine specimens of the baobab tree were seen, some of them averaging fifty feet in diameter.

It was estimated at about seven-eighths of the diameter of the planet, and was visible to Cook throughout the whole Transit.

Many of the trunks were two feet in diameter.

Near the northern side there was a salt lake of one hundred yards in diameter, sunk in a deep natural basin.

Not far from this eminence is a remarkable leaning minaret, more than a hundred feet in height, while in diameter it cannot be more than fifteen feet.

The cedar frequently showed a solid white bole, three feet in diameter.

Mr. Harrison and I saddled and rode off, passing along a wall of fantastic rock-turrets, at the base of which was a natural column, about ten feet high, and five in diameter, almost perfectly round, and upholding an immense rock, shaped like a cocked hat.

An isolated rock, thirty feet in height by twenty in diameter, was cut so as to resemble a triangular tower, with the apex bevelled.

After riding for two hours across broad, wild ridges, covered with cedar, we reached a height overlooking the valley of the Rhyndacus, or rather the plain whence he draws his sourcesa circular level, ten or twelve miles in diameter, and contracting towards the west into a narrow dell, through which his waters find outlet; several villages, each embowered in gardens, were scattered along the bases of the hills that inclose it.

"But I no longer touched the body of a dog; the form beneath my hand was cylindrical, apparently about a foot in diameter.

As my hand moved on the diameter diminished, and the skin of the creature became cold and clammy.

Steadily I descended, and steadily the diameter of the form I grasped diminished; soon I could grasp it in my hand; then with a terrified glance I looked below.

A.Multiply the centrifugal force in terms of the weight of the body by the diameter of the circle in feet, and multiply the square root of the product by 4.01; the result will be the velocity of the body in feet per second.

Q.Will you illustrate this by finding the velocity at which the cast iron rim of a fly-wheel 10 feet in diameter would burst asunder by its centrifugal force? A.If we take the tensile strength of cast iron at 15,000 lbs.

Then by the same process as before, 8,000/37.4 = 213.9, the centrifugal force in terms of the weight: 213.9 x 7, the diameter of the wheel = 1497.3, the square root of which, 38.3 x 4.01 = 155.187 feet per second, the highest velocity of the rims of railway carriage wheels that is consistent with safety.

A.Precisely so, it will be the diameter multiplied by the length of the bearing.

A.The power of a rod or pillar to resist compression, varies nearly as the fourth power of the diameter divided by the square of the length.

The cross head which engages the piston rod is made somewhat longer than the diameter of the cylinder, and two great links or rods proceed one from each end of the cross head to one of the side levers or beams.

There are two sets of driving wheels, 5 feet diameter, with outside connections.

"Another amusement were large wheels, about thirty or forty feet in diameter, on the circumference of which were four and sometimes six boxes capable of holding four persons.

Mules and horses seven or eight miles away broke loose and galloped across the country wild with fright, while a shower of fragments fell over a circle six miles in diameter.

Now the size, or diameter, of a telegraphic conductor is just as important an item, in determining the strength of current which can be maintained upon it with a given amount of battery-force, as the length of the conductor.

Thus, if the diameter of the wire be doubled, the area of its section being increased in a fourfold proportion, the intensity of the current transmitted along the wire will be increased in the same ratio.

The resistance of a wire, as we have seen above, is proportional to its length, and inversely to its diameter.