Jabir ben Aflah, II, _59_. Jack, R., I, 149. Jacotot, J., I, 278, _278_. Jameson, Mrs., II, _63_. Jeffreys, G., I, _183_. Jenner, E., II, _205_. Jesuit contributions, I, 164. Johnson, H. C., I, 350. Johnson, S., I, 20, _190_, 259; II, 117. Johnston, W. H., II, 67. Jombert, I, _161_. Jonchere, I, _146_, 146. Jones, W., I, _135_; II, 298, 301. Jones, Rev. W., I, _237_. Jonson, B., I, 13. Journals, Three classes of, II, 144. Kantesian Jeweler, I, 258. Karsten, I, _230_. Kaestner, I, _43_, 110, 112. Kater, I, 11. Keckermann, I, 3. Keill, J., II, _302_. Kepler, I, 52, _76_, 82, 381; II, 166. Kerigan, T., I, _308_, 353. Keroualle, De, II, 50. Kersey, I, 107. King, Wm., I, _246_. Kircher, Adolphe, I, 229. Kircher, Athanasius, I, _103_. Kirkringius, T., I, 125, _125_. Kittle, I, 236. Klein, F., II, 367. Knight, C., II, _109_, 280, 289. Knight, G., I, 151, _151_. Knight, R. P., II, _274_. Knight, Wm., I, _97_. Koenig, S., I, _150_. Lacomme, I, 46. La Condamine, II, _301_. Lacroix, I, 41, 159, 207. Lactantius, I, 33, _96_. Lagrange, I, 221, _288_, 313, 382; II, 86. Laing, F. H., II, _186_, 186. Lalande, I, _159_. Lamb, C., I, 178; II, 270. Lambert, J. H., I, _336_; II, 214, 367. Lambert, John, II, _309_. Language, Test of, II, 327. Lansbergius, I, _70_, 70. Laplace, I, 24, _255_, 382; II, 1, 340. Lardner, D., II, _253_. Lardner, N., I, 14; II, _221_. Laud, I, _145_. Lauder, W., I, 297. Laurent, P., I, _309_, 309. Laurie, J., II, 4. Laurie, P., II, _42_. Laurus, I, 381. Law, Edmund, I, _181_. Law, Edward, I, _181_. Law, W., I, 168, _254_; II, 317. Le Coq, I, _86_. Lee, R., I, _66_. Lee, S., I, _131_. Lee, W., I, 157. Legate, I, _59_. Legendre, I, _229_; II, 215, 367. Legh, P., II, _68_, 83. Leibnitz, I, 5, 7; II, 46. Leo, St., I, _359_. Leverrier, I, _43_, 82, 383, 386, 388, 390; II, 7, 135, 140, 303. Lewis, G. C., II, 162, _162_. Libri, I, _40_, 62; II, 295. Lilius, Aloysius, I, 362. Lilly, I, _115_; II, 302. Lipen, M., I, _298_. Little, J., I, 206. Livingston, R., I, _148_. Locke, J., I, _142_, 142, 144; --and Socinianism, I, 142. Locke, R., I, 146. Locke, R. A., I, _326_; II, 86, 131. Logan, W. E., I, _337_. Logic, Formal, I, 158; II, 75. --Has no paradoxes, I, 330. London Mathematical Society, I, 383. London, University of, I, 259; II, 71. Long, G., II, _290_. Long, J. St. J., II. _38_, 205. Longitude problems, I, 132, 146, 249. Longley, C. T., I, _325_. Longomontanus, I, _105_, 105. Lottery, I. 281. Lovett, R., I, 165, _166_. Lowe, R., II, _169_. Lowndes, W. T., I. _402_. Lubbock, J., I, _279_; II, 148. {382} Lucas, F., II, _28_. Lucian, I, _102_. Lunar Caustic Joke, I, 288. Lunn, J. R., II, _66_. Lydiat, T., II, _302_. Lyndhurst, I, _198_.