He drew out a lens and lay down upon his waterproof to have a better view, talking all the time rather to himself than to us.
For a long time he remained there, turning over the leaves and dried sticks, gathering up what seemed to me to be dust into an envelope and examining with his lens not only the ground but even the bark of the tree as far as he could reach.
A lens and a forceps lying upon the seat of the chair suggested that the hat had been suspended in this manner for the purpose of examination.
The lens discloses a large number of hair-ends, clean cut by the scissors of the barber.
Then with his lens he tested the hinges, but they were of solid iron, built firmly into the massive masonry.
He threw himself down upon his face with his lens in his hand and crawled swiftly backward and forward, examining minutely the cracks between the boards.
That is quite settled,” said he, rising and putting his lens in his pocket.
But if his eyes were broad as the lens of Herschel’s great telescope; and his ears capacious as the porches of cathedrals; would that make him any longer of sight, or sharper of hearing?
If we desire to ascertain how near, apparently, a lens would bring the satellite (or any distant object), we, of course, have but to divide the distance by the magnifying or, more strictly, by the space-penetrating power of the glass.
Mr. L. makes his lens have a power of 42,000 times.