For convenience and versatility, no mass-produced wood paneling can beat hardboard—a tough, pliable, water-resistant material made from wood fibers.

After dinner, twenty rooms, each between sixteen and eighteen feet square, were allotted us by ballot, sixteen of which were laid with brick over the boarden floor.

Ants are integral components of terrestrial ecosystems, owing to their manifold interactions with other organisms. They serve as seed dispersers for plants (myrmecochory), mutualists with sap-sucking insects (trophobionts), and hosts for a wide range of associate organisms (myrmecophiles) and act as both predator and prey.

The key insight was to replace the law of cosines by a law of versed sines or a law of suversed sines, where the suversed sine of an angle is the versed sine of the supplement of that angle.