To the Editor of the Dean Sij—A recent paragraph in your paper called attention to the eclipse of the sun, which is to take place on Tuesday of next week, April 6th.—As it will be visible here as a partial eclipse, the following particulara of time of beginning, magnitude, &e., calculated for Shanghai, may be Of interest Partial Eclipse of the Sun at Shanghai, April Gth, 1875.
Greatest Bhase, 4h. 18a. 333. oan Tite. Beginning, 3h. 13m, 1s, Eud, Bh. 17m. 24s, it Shang! Duration, 2b. 4m. 238, Magnitude, 0.675 (sun's diameter b or 8.1 digits, on sun's sout First} 143° toW. ofsuu'sN, point) 5... Contact, 162° tolefe—,, vertex (gi Jast sortie. 5, N. point ¢ "ireer Contact, 20°toleft vertex {twill thus be seen that almost exnetly two-thirds of the sun's diameter will be covered at the time of greatest obscuration, Tt must be burke in mind also that the predicted times of the various phases are exact, only upon the supposition that the eris of the Moon is correct; but owing to the imperfection of the Lunar 'Tables, the calculated times are subject to an unco' tainty amounting to a considerable By projecti path of the tot eclipse on a chart, from the data given i the Nautical Almanac, it will be found that we in Shavghai are about 600 miles north of the northern limit of total eclipse. The line of hie limit, after emyssing Siam, just cuts off the S.-E corner of Hainan, and passes into the Pacific ubout 40 miles south of the southern extremity of Formosa, the line of central eclipse runs a few miles south of Bankok, passes almost exactly through Hué, the ex pital of Annam, and runs directly through one of For it enters the Paci the largest of the Bashee Islands, south of
eat possible place for observing the eclipse would be at a point in the fudian Ocenn almost on the Equator, and of Ceylon.
Here the total phase will Inst best available coast of Tonasserim, and in the vicinity of Bankok, Siam, ut which pointe the totality will Jast from 44 to a little less than 4 minutes, Your readers will doubtless: have noticed that Her*Majesty's Gover ment have made a grant of £1,000 to aid in securing observations of the eclipse, which Mr. Hind states will take place favourable circumstances as lu track, &e., than any other one tot April, 1893. "Interesting particulars regarding the additions to our present knowledge of" the sun's corona, which it is hoped will be furnished by this eclipse, will be found in the Spectator of January 16th, Yours very truly,
Text read from the printed page and cleaned; old type leaves the occasional error.