General Index 



433 



[Roman figures refer to the chapters^ Arabic to the articles.] 



Moons. See Satellites 



Morning star, i. 14. Sec also 



Venus 



Morocco, in. 6 1 

 Motion, laws of. See Laws of 



motion 

 Multiple stars. See Stars, double 



and multiple 



Mural quadrant, x. 218, 225 n 

 Music of the spheres, n. 23 ; vn. 



144 

 Mysterium Cosmographicum (of 



Kepler), v. 108; vn. 136, 144 



Nadir, in. 64 



Nautical Almanac. See Almanac, 

 Nautical 



Nebula in Argus, xm. 307 



Nebula in Orion, xn. 252, 259, 

 260; xm. 311 



Nebulae, x. 223 ; xi. 250 ; xn. 

 252 256, 259-261 ; xm. SOS- 

 SOS, 310, 311, 317, 318, 319, 320 



Nebulae, spiral, xm. 310 



Nebular hypothesis, xi. 250; xm. 

 318-320 



Nebulous stars, x. 223 ; xn. 260, 

 261 



Neptune, xm. 289, 295, 297 



Neptune, satellite of, xm. 295 



New Almagest (of Kepler), vn 

 148 



New Almagest (of Riccioli), vm. 



*53 



New moon. See Moon, phases of 

 New stars. See Stars, new 

 New Style (N.S.), n. 22. See 



also Calendar, Gregorian 

 Newton's problem, xi. 228, 229, 



249 

 Newtonian telescope, ix. 168 ; 



xn. 252, 253, 256 

 Night-hour, i. 16 

 Node, n. 40, 43; v. in ; ix. 184 ; 



x. 213, 214; xi. 236, 246 

 Nubeculae, xm. 307 

 Nucleus (of a comet), xm. 304 

 Nurnberg school, in. 68 ; iv. 73 



Nutation, x. 206, 207, 213-215, 

 216, 218 ; xi. 232, 248 ; xn. 263 

 , i. i6 



Oberon, xn. 255 



Obliquity of the ecliptic. See 



Ecliptic, obliquity of 

 Observational astronomy, xm. 



272, 273 



Occultations, i. 15 ; 11. 30 

 Octaeteris, n. 19 

 Olbers's comet, xm. 291 

 Old Moore's Almanack, i. 18 n 

 Old Style (O.S.). See Calendar, 



Julian 

 Opposition, n. 43, 48 n ; in. 60 ; 



iv. 87, 88; v. in; vm. 161 ; 



xm. 281, 284, 297 

 Opposition of Mars, vm. 161 ; 



xm. 281, 284, 297 

 Optical double stars, xii. 264 

 Optics (of Gregory), x. 202 

 Optics (of Newton;, ix. 192 

 Optics (of Ptolemy), n. 46 

 Optics (of Smith), xn. 251 

 Opus Majus, Minus, Tertium 



(of Bacon), in. 67 

 Opuscules Mathe'matiques (of 



D'Alembert), xi. 233 

 Orion, nebula in, xn. 252, 259, 



260 ; xm. 311 

 Oscillatorium Horologium (of 



Huygens), vm. 158 ; ix. 171 



Pallas, xm. 294 



Parabola, ix. 190 ; xi. 236 n ; 



xm. 276 



Parallactic inequality, xm. 282 

 Parallax, 11. 43, 49; iv. 85, 92; 



v. 98, 100, no; vi. 129; vii. 



145 ; vm. 161 ; x. 207, 212, 



223, 227; xn. 257, 258, 263, 



264; xm. 272, 278, 279, 281- 



284 

 Parallax, annual, vm. 161. See 



also Parallax, stellar 

 Parallax, horizontal, vm. 161 



