Lacteals, b. [453].
Latent heat, b. [160].
Laws of motion, first, a. [322].
Laws of motion, second, a. [330].
Laws of motion, third, a. [334].
Leap year, a. [118].
Leyden phial, b. [196].
Librations (of planets), a. [297].
Libration of Jupiter’s Satellites, a. [441].
Limb of an instrument, a. [162].