Gascoigne, 59, 61 Gauss, C. F., 48 Geysius, 67 Ghetaldi, 70, 71 Gibson, 67 Girard, A., 32, 80 Glaisher, J. W. L., 54-56, 64, 80 Glorioso, 67, 68 _Grammelogia_, 4, 47, 89 Gravelaar, 83 Greater than, symbol for, 81 Greatrex, R., 15 Gregory, D., 32 Gregory, J., 27, 76 Gresham College, 1, 6, 27, 59, 61, 80 Guisnée, 77 Gunter, E., 37, 47, 86 Gunter’s scale, 37 Halcken, P., 78 Hales, J., 7 Halley, E., 1, 18, 69 Hankel, H., 40 Harper, T., 18 Harriot, T., 45, 47, 57, 58, 69-71, 81 Harris, J., 76 Hartlib, 69 Haughton, A., 35, 59 Hawkins, J., 76, 82 Hearn, 56 Helmholtz, 48 Henry, J., 48 Henry van Etten, 52, 53 Henshaw, T., 8, 58, 61 Hobbes, 73, 86 Hollar, 14 Holsatus, 13 Hooganhuysen, 64 Hooke, Rb., 1 Horner’s method, 45 Horology, 18, 50 Horrox, J., 4 Hospital, de l’, 74, 77 Howard, Th. _See_ Earl of Arundel. Howard, W., 17, 18, 59 Hutchinson, A., 6 Invisible college, 1 Joule, 48 Kepler, J., 6 Kersey, J., 32, 73, 82 Keylway, R., 65 King, 67 Kings College, Cambridge, 3, 35 Krafft, G. W., 79 Lambert, J. H., 79 Lamy, R. P. B., 74 Laud, Archbishop, 65 Leake, W., 53 Le Clerc, 77 Leech, W., 59 Le Fèvre, 77 Leibniz, 47, 78, 80 Leonelli, 56 Le Paige, de, 83 Less than, symbol for, 81 Leurechon, 52 Leybourn, 35, 64, 76 Lichfield, Mrs., 19 Lilly, W., 8, 9 Locke, J., 67 Logarithms, 6, 21, 27, 28, 38, 39, 42, 46, 54-56, 65, 92, 93; natural, 55; radix method of computing, 55, 56 Lower, W., 58 Ludolph à Ceulen, 79 Manning, 56 Manning, O., 7, 8, 13-15 Mascheroni, L., 78 Mayer, R., 47 Melandri, D., 78 Mercator, N., 13 Mersenne, 63 Milbourn, W., 45 Million, 20 Milnes, J., 82 Moivre, de, 32, 79 Moore, Jonas, 32, 54, 58, 73 Moreland, S., 70 Morse, R., 48 Multiplication, abbreviated, 21, 22, 24; symbol for, 27, 82, 83 Mydorge, 54 Napier, J., 6, 7, 21, 27, 38, 39, 52, 54, 57, 59 Napier’s analogies, 39 Newton, Sir Isaac, 1, 25, 29, 40, 41, 45, 47, 59, 65, 86, 92-95 Nichols, J., 6, 14 Nicolas, R. P. P., 74 Nieuwentiit, B., 78 Norwood, R., 37, 38, 80 _Opuscula mathematica hactenus inedita_, 16, 21, 75 Orchard, 56 _Oughtredus explicatus_, 64 Ozanam, 74 π, symbol for, 32 Paige, C. de, 83 Pardies, 76 Parentheses, 26, 79, 80 Partridge, S., 47 Peano, 86 Perfect number, 41 Pitiscus, 15 Planisphere, 53, 92, 93 Prestet, J., 74 Price, 11 Proportion, notation for, 26, 27, 73-79 Protheroe, 58 Ptolemy, 83 Quadratic equation, 29, 31, 34 Radix method, 55, 56 Rahn, 27 Raphson, J., 40, 41, 76 Ratio, notation of, 21, 73-80 Rawlinson, R., 39, 82 Regula falsa, 18 Regular solids, 18 Riccati, G., 78 Riccati, V., 78 Rigaud, 7, 12, 13, 19, 48, 61-66, 68 Robillard, 77 Robinson, W., 13, 48, 59, 62, 63 Rooke, L., 59, 61