old and decayed, and it is gradually weakened by the frosts, until a line drawn from the centre of gravity falls without its base, and then the tree comes of a certainty; and I should like to know, what greater compulsion there can be for any thing, than a mathematical certainty. I studied mathe———"
"Very true, Richard," interrupted Marmaduke; "thy reasoning is true, and if my memory be not over treacherous, was furnished by my self on a former occasion. But how is one to guard against the danger? canst thou go through the forests, measuring the bases, and calculating the centres of the oaks? answer me that, friend Jones, and I will say thou wilt do the country a service."
"Answer thee that, friend Temple!" returned Richard; "a well-educated man can answer thee any thing, sir. Do any trees fall in this manner, but such as are decayed? Take care not to approach the roots of any rotten trees, and you will be safe enough."
"That would be excluding us entirely from the forests," said Marmaduke. "But, happily, the winds usually force down most of these dangerous ruins, as their currents are admitted into the woods by the surrounding clearings, and such a fall as this has been is very rare."
Louisa, by this time, had recovered so much of her strength, as to allow the party to proceed at a quicker pace; but long before they were safely housed, they were overtaken by the storm; and when they dismounted at the door of the Mansion-house, the black plumes in Miss Temple's hat were drooping with the weight of a load of damp snow, and the coats of the gentlemen were powdered with the same material.
