Memoirs for a natural history of animals. Containing the anatomical descriptions of several creatures dissected by the Royal Academy of Sciences at Paris / Englished by Alexander Pitfeild [!] ... To which is added an account of the measure of a degree of a great circle of the earth, published by the same Academy, and Englished by Richard Waller.

French Academy of Sciences

Date:: 1688

Credit: Memoirs for a natural history of animals. Containing the anatomical descriptions of several creatures dissected by the Royal Academy of Sciences at Paris / Englished by Alexander Pitfeild [!] ... To which is added an account of the measure of a degree of a great circle of the earth, published by the same Academy, and Englished by Richard Waller. Source: Wellcome Collection.

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395/428 page 21

caufe ‘tis one, of, the adyantages of the Tellefcope Sights, that by means of them one may difcover the fixed Stars of the fecorid mag- nitude in the greateft clearnefs of the Crepufculum, and that thofe of the firft Magnitude may be obferved in full Sun-fhine, which will be a great help to Aftronomy ; we have made feveral curious Obfervati- ons, which we thall hereafter Publifh. ( | If we fuppofe then that the Meridian Line of. Sowr don be prolong: Second ed toward the North, till it meets the parallel of Amiens at the pase point ¢ for the making the Kectangle Triangle N 8 V, the Angle of 5 Declination V.N 4, being 18° 55’ andthe hypothenufe N V, being found 11161 Toyies, 4.Foot, it follows that the Meridian Diftance N 6 between the parallels of Sourdon and. Amiens is 10559 Toyfes, 3 Feet, and that the Arch of the Parallel V 8 comprifed between Amiens and the Meridian of. Seurdon is 3617 Toyfes, 4 Foot. After the fame manner if we fuppofe that the fame Meridian Line Second 1: ! “11 9 8 Plate, firft of Sourdon be prolonged,towards the South, till it meets with the Figure. Parallel of Malvoifine at the point 2. and that this Meridian be divi- ded into three, parts by the perpendiculars G.4 I + which. reprefent the Parallels of Mare] and Sourdon, that moreover the particular Meridian Lines of thofe places be drawn, to wit, G s, from Mareiil to Malvozine, and! 6 trom Clermont to, Mare il, ; In the Triangle N y I, rectang- In the Triangle G I 8, rectang- led in y. led in 8. NI 18907 Toyfes. IG» 17564 Toyfes. FN: 299! 16% GW 19 a9? 00%, . Thence N y 18893 Toyles, Thence 19 or y #, 17560 Toy- 3 Foot. | ( fes, 3 Foot. Andy I 710 Toyfes. And Gg 352 Toyfes. In the Triangle G E * rectang- “Jed ine. GE, 31895 Toytes. EGe 00° 26/ 00%, Thence G E or se, 31894 (Toyfes, And Es 241 Toyfes, 3 Foot. The 3 lines Ny, 18, Ge, make together the whole Diftance be: tween the Parallels of Sourdon and of Malvoifine, of 68347 oye ni 3 Foot ;

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