The Observatory, Volume 15
"A review of astronomy" (varies).
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Airy appears Astronomer attention belt bright close comet compared comparison complete considerable continued crater dark determined diameter difficulty direction discovery distance disturbance drawings eclipse effect error exposure fact faint February give given Greenwich important interesting July June Jupiter less light lines longitude lunar magnitude March matter mean measures Meeting method minutes months Moon motion mounting nearly night noticed Nova object observations Observatory obtained orbit period photographs planet plate position possible present President probably Prof proposed published question recent record referred regard region remarkable Royal satellite seems seen Sept shadow shown side similar Society spectrum stars streaks surface taken telescope theory tion transit visible wall whole
Page 174 - Formed a design in the beginning of this week, of investigating, as soon as possible after taking my degree, the irregularities in the motion of Uranus, which are yet unaccounted for; in order to find whether they may be attributed to the action of an undiscovered planet beyond it; and if possible thence to determine the elements of its orbit, etc. approximately, which would probably lead to its discovery.
Page 134 - The author is of opinion that no kind of epidemic or plague is conveyed by the general atmosphere, but that all epidemics are caused by human conditions and communications capable of control. In this paper he investigates the manner of the propagation of influenza, and gives the dates of the outbreaks in 1890 at a large number of islands and other places in various parts of the world. Mr. Russell says that there is no definite or known atmospheric quality or movement on which the hypothesis of atmospheric...
Page 219 - Anemometer appears to me to possess numerous advantages. The head is simple in construction and so strong that it is practically indestructible by the most violent hurricane. The recording apparatus can be placed at any reasonable distance from the head, and the connecting pipes may go round several sharp corners without harm. The power is conveyed from the head without loss by friction, and hence the instrument may be made sensitive to very low velocities without impairing its ability to resist...
Page 77 - our astronomical observer" at a salary of £100 per annum, his duty being "forthwith to apply himself with the most exact care and diligence to the rectifying the tables of the motions of the heavens and the places of the fixed stars, so as to find out the so much desired longitude of places for the perfecting the art of navigation.
Page 206 - I have shown that the total absorption of light by a medium of varying thickness can be ascertained by measuring the absorption of a single ray which lies close to the maximum of its...
Page 135 - Among other changes, the number of plants, etc., selected for observation has bet-n greatly reduced, while the number of observers has considerably increased. The winter of 1890-91 proved in England very destructive to the root crops, as well as to green vegetables and tender shrubs. Birds also suffered severely. In Scotland and Ireland, however, there was scarcely any severe weather until March. The flowering of wild plants was greatly retarded by cold in the spring, but during the summer the departures...
Page 127 - He then detailed the results of his own experiments, and also the gaugings of the underground waters in the drainage areas of the rivers Wandle and Graveney. He further stated that in the course of his observations on the flow of underground water, he had observed that at certain particular seasons of the year it was possible to indicate the direction and volume of the flow of underground streams, even when they were at a considerable depth, owing to the formation of peculiar lines of fog.
Page 326 - Committee have unanimously agreed upon the following recommendations : — 1. That the Board of Trade, or some other central authority, should schedule certain employments in the mercantile marine and on railways, the filling of which by persons whose vision is defective either for colour or form, or who are ignorant of the names of colours, would involve danger to life and property. "2. That the proper testing, both for colour and form, of al candidates for such employments should be compulsory.
Page 171 - England though subject to considerable nocturnal radiation, with about half the number of rainy days, and four or five times the number of bright ones, which we can boast of ; with cold winds and cold weather, without which it would lose its health-giving effect.
Page 127 - ... the amount of evaporation, one being painted white, another black, and the results given by these gauges were compared with a copper gauge exposed under similar conditions. This comparison was the means of showing that the greatest errors in evaporating gauges arise from the capillarity of the water rising on the sides of the gauge and thus inordinately increasing the amount of evaporation. Consequently a small gauge, having a larger amount in proportion of side area than a larger gauge, gives...