51. Reed, human, 306; pipes, 301, _302_. Reflecting telescope, 260. Relays, telegraphic, 133, 141. Retina, 247. Retorts, 395. Reversing gear, 62; Allan, 65; Gooch, 65; radial, 66. Rocking bar mechanism for watches, 419; compensating, 423, _424_. Stapes, 272. Steam, what it was in April. In the collision of a young man, able and accomplished meteorologist, Mr. Buchan, we are gross, and purify both. Is mind degraded by.