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appeared April Astronomer Royal Astronomical Society August Bielid Bizana bright British Astronomical Association Burmese Cape Catalogue chromosphere Comet corona Cowell Cygni David Gill determination distance double stars E. T. Whittaker Earth eclipse effect ephemeris equator fact George Darwin Greenwich instruments interesting July June Jupiter Karrusel Watches latitude light limb lines London longitude lunar magnitude March Marine Chronometers marked Mars mean measures Meeting Mercury meridian meteor method miles month Moon Moon's motion nebula November obliquity observations orbit paper parallax perihelion period photographs planet plates present President Prof proper motion records referred remarkable rotation Royal Astronomical Royal Observatory satellites Saturn seems seen Sept Sidereal small spots solar Solar Eclipse South spectra spectrum suggested sun-spots Sun's taken telescope theory tidal Variable Stars velocity Venus visible
Seite 57 - ... especially the south-east — were the high state of the barometer throughout the whole of the period, except a portion of August ; the high temperature in July, August, and September ; the great amount of sunshine ; and the deficiency of rainfall. Over the south-eastern portion of England more than 900 hours of bright sunshine were recorded during the four months June to September ; while at a few stations in the extreme south and on the east coast over 1000 hours were recorded. The sunshine...
Seite 63 - The intense lustre of its illuminated part dazzles the sight, and exaggerates every imperfection of the telescope; yet we see clearly that its surface is not mottled over with permanent spots like the Moon; we notice in it neither mountains nor shadows, but a uniform brightness, in which sometimes we may indeed fancy, or perhaps more than fancy, brighter or obscurer portions, but can seldom or never rest fully satisfied of the fact.
Seite 63 - The most natural conclusion, from the very rare appearance and want of permanence in the spots, is, that we do not see, as in the Moon, the real surface of these planets, but only their atmospheres, much loaded with clouds, and which may serve to mitigate the otherwise intense glare of their sunshine.
Seite 63 - As to the mountains in Venus, I may venture to say that no eye which is not considerably better than mine, or assisted by much better instruments, will ever get a sight of them.
Seite 66 - Webb points out to be obvious enough. A very sensitive eye, which would detect the spots more readily, would be more easily overpowered by the light of a brilliant star, so as to miss a very minute one in its neighbourhood.
Seite 58 - September i and 2 differences of 25° were observed between tbe readings of the dry and wet bulb thermometers, and relative humidities below 30 per cent, were recorded at many inland places. Owing to the great heat vegetable matter became very inflammable, and consequently there were more stack -fires than usual, and extensive stretches of heather and gorse were also set on fire. Tbe author said that with the advent of the hot weather the death-rate increased considerably; and he pointed out that...
Seite 53 - Prssibilily of Improving the Places of the Reference Stars for the Astrographic Catalogue from the Photographic Measures...
Seite 57 - Observatory, Greenwich, during the four months June to September. The chief feature which strikes one on looking at this diagram is the high state of the barometer throughout the whole of the period, except during a portion of August. The temperature was above the average in July, August, and September — the most remarkable point being the great heat at the end of August and the beginning of September. The sunshine was very abundant, the number of bright days being most marked. The rainfall throughout...
Seite 74 - Signe, 461 Saskia, 463 Lola, 464 Megaira, 465 Alekto, 466 Tisiphone, 467 Laura, 468 Lina, 469 Argentina, 471 Papagena, 473 Nolli, 474 Prudentia, 479 Caprera, 480 Hansa, 481 Emita, 490...