[3]. Sir John Herschel remarks that there are just as many thousands of feet in a degree of the meridian in our latitude as there are days in the year, viz. 365,000.
The Greenwich Observatory is in N. lat. 51° 28ʹ40ʺ.
[4]. Or more correctly 3422ʺ·325 and 238,793 miles, as deduced from Mr. Adams’ more accurate calculations.
[5]. Neptune was discovered in the year 1846.
[6]. The satellites of the two great planets on the farthest verge of the solar system form a singular exception to this law.
[7]. See the chapter on the Tides and Currents in the ‘Physical Geography,’ by the author, 4th edition.
[8]. Sir John Herschel on Meteorology.
[9]. Bakerian Lecture, by Michael Faraday, Esq. Phil. Trans. 1857.
[11]. M. Marbach of Breslau.