6s.29d.40m. 18s. 3d. April 2+25=27 and 45-27-18th. full moon From the place of the node Ap. 3d. Subtract 15 days motion of the node April 18th. moon's node is in Ap. 18th. Sun's place is dift. of Sun from moon's node 6 28 47 40 52 38 O 28 00 6 00.52 38 Therefore rejecting 6 Signs it appears the fun is very near the moon's South node, confequently a great Eclipfe of the moon. 4th. May 3+25=28 and 30-28=2d. of May new Moon. о 12 55 o2 within dift. of fun from moon's node moon. May zd. moon's node is in 6s. 15 days mo. fubtract o 17th. full 28d. 4m. 58s. O 47 40 42 42 Paft the limit no eclipfe this full moon. 6th. Having found them paft the limit, may advance forwards five months; fo here we begin again at October. October 8+25= 33 and 45-33= 12th. full moon. whence whence 2 years mo. of node is. 8d. 46m. 9mo. ditto 14 18 50 48 30 12 far within the limit confequently an eclipse of the moon. 7th. As this lunation is near the node, we examine the preceeding new moon in September. September 8+25 = 33 and 59-33 moon. = 26th new October 12th. moon's node is 6s. 19d 30m. 12s. In going backwards add 15 days motion 47 40 17 17 52 but the limit at new moon is 18d. ·, within that limit an eclipse of the fun. = 26th. new moon. 8th. As this new moon happens but just within the limit, we may proceed to the new moon in October. October 8+25 = 33, 59—33 Place of node October 12th. 6s. 19d. 30m. 125. 15 days motion fubtract 47 40 7 3 00 O 14 17 28 within the limit a small eclipse of the fun. 9th. As this eclipfe happens near the limit, we may conclude for this year, having found 4 fmall eclipfes of the fun, and two great eclipfes of the moon. By this method you may compute the eclipfes that will happen any year to come, but cannot determine by this rule whether any of thefe eclipfes will be visible, nor the hour of the day when they happen. A PLAN of a Perpetual Almanac, by which may be found in a minute's time, the day of the month, in any year to come. 45 91011 6 7 15 |16| 1384 80&. 12 13 14 May B C D E F GA 17 18 19 Aug. CDEFGAB 1415 Feb. 9301 Mar. DEF GAB C 6 Nov. 5 40 1 2 June E F GA B C D 7 Sept 2 3 Dec. F GABCDE 3 5 160 1 4 July GA B C D E F ABCDEFG DIRECTION S. Under the word years find the year, above which is the dominical letter for that year; then against the month in the other table, find the fame letter, over which are placed the days of the month for every funday of that month. Each blank space fhews the year following is leap year, and in leap year for January and February ufe. the letter above the preceeding blank. A A Ferpetual TABLE of Sun Rifing, every Third Day in the Year, Calculated for the Latitude of WH HITEHAVEN. January 8 258 218 178 138 9 March 6·406 336 266 196 12 April 5 325 265 195 135 6 May 4 304 244 184 124 7 June July 3 393 373 343 323 30 3 323 343 373 493 43 Auguft 4 114 174 244 294 32 September 5 145 215 285 345 41 October 6 186 256 316 386 45 November 7 267 337 387 447 50 December 8 188 228 268 298 30 Months. 26 29 ID 1 17 20 23 January 18 5 18 17 507 507 43 May Auguft 4 414 46 4 534 575 6 The use. Find the month on the left hand side, and day at top, and in the angle of meeting laterally ftand ftand the hour and minute of fun rifing. As March the 29th. the fun rifes at 6 o'clock, and 9 minutes. May the 5th. fun rifes at 40'clock 24 minutes. If fun rifing be required one of the intermediate days as May 7th. you will find by the table 3 days has 6 minutes difference, fo that on May the 7th. it rises at 4 o'clock zo minutes. N. B. So many minutes as it rifes after 8 7 6 5 4 3 it fets as many before 4 5 6 7 8 9 A Tranfient view of the Solar System. T HE true fyftem of the world introduced of old by PYTHAGORAS and his followers, revifed of late by COPERNICUS and finally proved and demonftrated by the more late incomparable Sir I. NEWTON. In which fyftem the fun is accounted much the largest of all the heavenly bodies, placed in or near the centre of the planets, with a rotation about its axis in 25 days 12 hours, its diameter equal to 100 diameters of the earth, and therefore the body of the fun must be a milion times greater than the earth. This great and glorious body is the fountain of light and heat, whofe genial influence, invigorates and cherishes both the animal and vegetable fpecies, by its inexhaustible store. There are frequently dark spots obferved on the fun's disk, by means whereof its rotation on its axis has been obferved, but what thofe fpots are, or of what use, is only conjecture. The first planet in order next to the fun in refpect to diftance, is Mercury, at about 32 milions of miles, carried round the fun in 87d. 23h. and a quarter, is feldom seen by reason of its fmalt diftance from the fun, being never more than 28 degrees and one third elongated from it; the progreffive velocity in its orbit 1605 miles per minute. This planet frequently tranfits the fun. The next in the fyftem is Venus, diftant from the fun 59 milions of miles, performs its periodical revolution round the fun in 224d. 14h. nearly. This is a U 3 bright |