INDEX. 



941 



PARALLAXES OP THE SOLAR SYSTEM : [154] Arist- 

 archus. 1688. [889-90] Cowper. 1766. [1176] 

 Encke. 1822-4. [1324] Ferguson. 1761. [1533-4. 

 1539]Gill. 1881-98. [2422]Landen. 1771. [4600] 

 Stewart. 1763. [5825-6] Aristarchus. 1572. 

 [5865] Atkinson. 1824. [7066] Crawford. 1876- 

 85. [12291] Murdoch, c. 1750. [S 1479]Harkness 

 1891. [SS 1271-2] Riccioli. 1651. 



v. Transits. 



PARALLEL RULER (DOUBLE) : [S 374] Dolland. c. 



1780. 

 PARALLELISM: [7216] Dee. 1573. [9254] Hessel. 



1853. 



PARALLELOGRAM or FORCES : [4583-5] Stevinus. 

 1586-1684. [5041] Varignon. 1725. [11611] 

 Matzka. 1856. [12020] Monge. 1846. 



v. Triangle oj Forces. 



PARALLELS, THEORY OF : [2026] Hume. 1853. [4151] 

 Ryan. 1866. [ 8885 ]Hankeet Binder. 1751. [10911] 

 Lobatschewsky. 1892. [12481] Newman. 1841. 

 [15755] Bolyai. 1896. [15940] Dodgson. 1895. 

 [15974] Engel und Stackel. 1895. [16000] Flye 

 Ste-Marie. 1871. [16308-9] Lobatschewsky. 

 1866-91. [16670] Spitz. 1875. [16798] Withers. 

 1905. [SS 663] Muller. 1826. 



v. Geometry (Non-Euclidean). 



PARGASITE : [464] Bonsdorff. 1816. 

 PASCAL'S LAW : [3476] Pascal. 1663. 



PATENTS AND PATENT LAW : [2163] Johnson. 1890. 

 [4030] Roberts. 1903. [6389] Bousfield. 1884. 

 [7306. 7310. 7313]Dircks. 1869. [8773]Haddan. 

 1911. [9818-19] Johnson. 1884-90. [11093] 

 Lunge. 1910. [13017] Patent Journal. 1846-7. 

 [13018] Patents. 1849. 



PEARLS : [10337] Kunz. 

 1750. 



1890. [SS 2678] Jeffries. 



PEDOMETER : [SS 512] Hulsius. 1615. 

 PEDRAIL : [7303] Diplock. 1902. 



PENDULUM : [1445] Galilei. 1638. [2064] Huygens. 

 1673. [3329] Nicolai. 1772. [4868] Toaldo. 1770. 

 [5509] Worms. 1862. [5930] Baily. 1824. [7037] 

 Cotes. 1770. [8029] Fordyce. 1793. [8212] 

 Galilei. 1638. [8957] Harrison, n.d. [9628] 

 Huygens. 1673. [10039] Keith. 1791. [13368] 

 PisatiePucci. 1883. [ 14286] Robert, s.d. [16940] 

 Barnard. 1872. [SS 1549] Bessel. 1828. 



- CLOCK : [2064. 9628] Huygens. 1673. 



OBSERVATIONS AND EXPERIMENTS : [1998] 



Horsley. 1774. [3617] Picard. 1731. [3649] 

 Plantamour. 1866-72. [4157] Sabine. 1825. 

 [5676] Airy. 1856. [5924] Baily. 1832. 

 [ 10327] Kiihnen und Furtwangler. 1906. [10975] 

 Loesch. 1902. [11950] Mitford. 1851. [12331] 

 Nagaoka, etc. 1902. [12831] Off. 1883. 

 [13088] Pendulum Observations. 1879. [13169] 

 Peters. 1880-1. [13381] Plana. 1859. [14766] 

 Schwerebestimmungen. 1895. [S 291] Foucault. 

 1878. [SS 1477-81] Accademia del Cimento. 

 1667-91. 



v. Earth, Density of the. 



PENTATHIONIC ACID : [7212] Debus. 1887. 



PERCENTAGE TABLES : [7832] Fergusson. 1901. 

 [S 702] Fergusson. 1912. 



PERCUSSION : [474] Borelli. 1667. [4424] Smeaton. 

 1794. [4914-15] Torricelli. 1715. [10414] 

 La Hire. 1695. [11430-3] Mariotte. 1717-40. 

 [14907-11. 14916] Smeaton. 1794-1814. 

 [15320-1] Torricelli. 1715. [15449] Wallis. 

 1670-1. [SS 1557] Borelli. 1686. 



v. Billiards. 



PERFUMERY : [3631] Piesse. 1855. [4014] Rimmel. 

 1868. [4193-4] Salmon. 1685-1701. [8317] 

 Gauthier. 1819. [9464] Hornot. 1788. [12977] 

 Parry. 1899. [13329-30] Piesse. 1855-91. 

 [14695] Sawer. 1892. [SS 2753] Dejean. 1759. 



v. Oils (Essential). Smell, Chemistry of. 



PERIODIC LAW : [2971-2] Meyer. 1883-8. [3222] 

 Newlands. 1884. [8279] Garrett. 1909. [9020] 

 Haughton. 1888. [9858] Jones. 1905. 

 [11812-14] Meyer. 1872-88. [12481] Newlands. 

 1884. [17302] Garrett. 1909. [S 2932] 

 Venable. 1898. 



PERMUTATIONS v. Combinations and P. 



PERPETUAL MOTION PARADOX : [444] Bockler. 1662. 

 [682] Caraccioli. 1755. [729] Caus. 1659. 

 [1064] Dircks. 1861. [2864] Martin. 1821. 

 [5413-18] Wilkins. 1648-91. [6211] Biehringer. 

 1875. [6284-5] Bockler. 1662. [6777] Caus, 

 1704. [7237] Desaguliers. 1734-44. [7307-9] 

 Dircks. 1861-70. ^[7427] Dye. 1895. [8242] 

 Galli. 1694. [8394] Gillard. 1804. [14747-9] 

 Schott. 1664-87. [15559-63] Wilkins. 1648-91. 

 [S 3419] Dobrzenski. 1657. 



PERSPECTIVE : [481] Bosse. 1665. [888] Courtonne. 

 1725. [1101-3] Dubreuil. 1679-1765. [1315] 

 Ferguson. 1803. [1918] Highmore. 1763. 

 [2113] Jacquier. 1755. [2401] Lambert. 1759. 

 [2420] Lamy. 1701. [2984] Miller. 1759. 

 [3130-1] Moxon. 1670. [3531] Pennethorne. 

 1878. [3801] Priestley. 1780. [4003*] Rider. 

 1836. [4116] Roy. 1756. [4153] Ryff. 1665. 

 [4263-4] Schooten. 1659-60. [4758-61] Taylor. 

 1715-49. [5604] Abbott. 1853. [6433] Bradley. 

 1834. [7244] Desargues. 1686. [7375-6] 

 Dubreuil. 1726-39. [7410] Dupain-Montesson. 

 1750. [7420-1] Diirer. 1605. [7551] Emerson. 

 1768. [7663] Euclides. 1662-3. [7804] Farish. 

 1820. [7836] Ferguson. 1778. [8591-2] 

 Gravesande. 1711-24. [8857] Hamilton. 1738. 

 [10014] Keatinge. 1812. [10159] Kirby. 1755. 

 [10361] La Caille. 1808. [11329] Malton. 

 1778. [11648] Maurolico. 1613. [12019] 

 Monge. 1827. [12228] Moxon. 1670. [12578] 

 Newton. 1748. [12646] Nicholson. 1841. 

 [12713] Noble. 1771. [13144] Perspective. 

 1828-30. [13204] Philips. 1786. [13477] 

 Polak. 1907. [13590-1] Pozzo. 1707. [13659-60] 

 Priestley. 1770-80. [14026] Reisch. 1512. 

 [15209-10] Taylor. 1715-49. [15419] Vrede- 

 man. 1633. [15628] Caus. 1612. [16047] 

 Gennerich. 1865. [16113] Hatton. 1903. 

 [16114]Hauck. 1910. [16476] Peschka, 1888-9. 

 [16487] Pillet. 1901. [16603] Schreiber. 1886. 

 [S 1677-8] Bacon (R.). 1614. [SS 161] Alberti. 

 1568. [SS 239-40.] Bosse. 1648. [SS 366] 

 Diirer. 1532. [SS 548-9] Lambert. 1768-74. 



: PARADOXES : [4109] Rowbotham. 1864. 



DRAWING INSTRUMENTS : [13040] Peacock. 



1785. [15336] Troili. 1683. [SS 161] Alberti. 

 1568. [SS 366] Dxirer. 1532. 



PERTURBATIONS, THEORY OF : [47-8] Airy. 1834-85. 



[1009] Denison. 1842. [5683] Airy. 1834. 



[5908] Backlund. 1884. [2710] Lubbock. 



1832. [8766] Gylden. 1871. [10868] Lind- 



stedt. 1883. [11961] Moebius. 1843. [12021] 



Monnichmeyer. 1893. [12471] Newcombe. 



1891. [14583] Runkle. 1855. [15132] Stoney 



and Downing. 1899. [16814] Airy. 1884. 



[S 1382] Bohiin. 1896. [SS 1661] Euler (J. A.). 



1762. [SS 1664] Euler (L.). 1746-51. 

 PETROLEUM, FLASHING POINT OF : [10004] Kast. 



1896. [10926] Lobry de Bruyn. 1896. 



INDUSTRY: [4811] Thompson. 1904. [8367-8] 



Gesner. 1861-5. [8674] Gregory. 1835. 

 [11884] Mills. 1877. [13059] Peckham. 1885. 

 [13984-5] Redwood. 1894-6. [15253] Thomson 

 and Redwood. 1901. 



