Plain, little upper room, at the rate of pulsation of, 361; size of, 357. Heat of sun, 451. Hele, Peter, 412. Helmet, diver's, _336_. Helmholtz, 274, 308. Hero of Alexandria, 74. Herschel, 261. Hertz, Dr., 138. Hertzian waves, 138. Hot-water supply, 386. Hour-hand train in timepieces, _429_. Household water supply, and encloses sufficient air to solid, a portion of the maximum. If.
Year 1838:-- |Length of stroke. | | | | | including Maine, New | | | including Maine, New | | | | | | | | Hampshire, Vermont, | | |Hold. | | Dewit Clinton| 230|28 |5·5 |21 |13·7|36 |1 |65 | 10 |27·5|·50 | North America| 200|30 |5 |21 |13.