544. Wakeley, Andrew. (--—.) The mariner's compass rectified with a description of the most useful instruments in practice in the art of navigation, also a table of latitude and longitude of places, enlarged by J. Atkinson, the whole revised by John Adams. 272 pp. 8vo. London, for Mount and Page. London, 1787 Detailed use of the compass in navigation; a handbook for seamen. 544a. Another edition, with additions by J. Atkinson, the whole revised by John Adams. 279 pp. 12mo. and Davidson. 545. Drury, O'Brien. fluid. London, for Mount on the magnetic (Trans. Roy. Irish Acad., 1788, pp. 119-120.) 4to. Dublin, 1788 The author of the paper recommends covering compass-needles with a casing of thin, soft iron, the better to preserve their magnetism. 546. Lo-Looz, Robert de. (1730-1786.) Recherches sur les influences solaires et lunaires pour prouver le magnétisme universel. 4 parts. 7 plates. 8vo. Londres et Paris, Couturier. Paris, 1788 Work on cosmical magnetism in which the speculative element predominates. 547. Prévost, Pierre. (1751-1839.) (1751-1839.) De l'origine des forces magnétiques. xxiii+231 pp. 2 plates. 12mo. Genève, chez Barde. Geneva, 1788 Magnetism due to two fluids, which are self-repellent but mutually attractive. Terrestrial magnetism and the great central magnet, p. 200. The author of this work is the Swiss physicist to whom we are indebted for the "theory of exchanges" in heat, which bears his name. -See also 2444. 548. Ribright, Thomas. ( .) Curious collection of experiments, to be performed on the electrical machines. Second edition enlarged and improved. 24 pp. 2 plates. 8vo. London, Steel. London, 1788 549. Ussher, H(enry). (1743-1790.) An account of an Aurora Borealis seen in full sunshine. (Trans. Roy. Irish Acad. vol. ii., pp. 189-191). 4to. Dublin, 1788 Note on the connection between terrestrial magnetism and the aurora borealis. 550. An account of some observations made with a view to ascertain whether magnifying power or aperture contributes most to the discerning small stars in the day. (Trans. Roy. Irish Acad. vol. i., pp. 37-42.) 4to. Dublin, 1788 551. Troostwijk, Adrian Paets van (1752-1837), and C(ornelius) R(udolph) T(heodor) Van Krayenhoff. (1758-1840.) De l'application de l'électricité à la physique et à la medicine. (Translated by Jan Hendrik van Swinden.) xii+319 pp. 4 plates. 4to. Amsterdam, chez D. F. Changuin. Amsterdam, 1788 This work written in 1786, is an inquiry into the nature of lightning, St. Elmo's fire, rain and fogs. The influence of electricity on vegetation is considered; also theory and application of electricity as used for medical purposes. Van Troostwijk was, according to Ostwald, the first to decompose with certainty a chemical compound electrically, in 1789. 552. Bennet, A(braham). (1750-1799.) New experiments on electricity, wherein the causes of thunder and lightning as well as the constant state of positive and negative electricity in the air or clouds are explained, with experiments on the clouds of powders and vapours artificially diffused in the air, also a description of a doubler of electricity, and of the most sensible electrometer yet constructed, with other new experiments and discoveries in the science, illustrated by explanatory plates. 141 pp. 4 plates. 8vo. Derby, J. Drewry. Derby, 1789 Bennet's electroscope, p. 18; his doubler, p. 76; electricity of powders, p. 22; 553. Brook, A(braham). (fl. 1789.) Miscellaneous experiments and remarks on electricity, the air-pump and the barometer; with the description of an electrometer of a new construction. xiii+211 pp. 2 plates. 4to. Norwich, for J. Johnson. Norwich, 1789 Description of the author's electrometer for quantitative measurements; the fracture and repair of Leyden jars; paper and tinfoil used for coatings, p. 96; experiments made during an aurora borealis, p. 110. -See also 2480. 554.† Calandrelli, Giuseppe. (1749-1827.) Ragionamento sopra il conduttore elettrico quirinale. xxxvi pp. 12m0. Bologna. Bologna, 1789 Construction and function of lightning conductors with numerous references: views of Franklin, Beccaria, Lord Mahon; Franklin's Lightning Kite experiment, June, 1752; that of de Romas, July, 1753. 555. (Darwin, Erasmus). (1731-1802.) The botanic garden, a poem in two parts; Part i. The economy of vegetation. Part ii. The loves of the plants. Third edition. 2 vols. 4to. London. London, 1789-1795 This is the principal work of Darwin, poet and physiologist; it contains 556. Deiman, J(ohann) R(udolph). (1743-1808.) Beschryving van eene electrizeer-machine. viii+93 pp. 2 plates. 4to. Amsterdam, W. Holtrop. Amsterdam, 1789 Description of an electrical machine, with several pairs of plates. 557. McCulloch, K(enneth). ( — - — .) An account of the new improved sea compasses made by K. McCulloch. With reports of their practical utility founded on some years ex perience by (Captain) Philip d'Auvergne and other scientific gentlemen. 30 pp. 3 plates. 8vo. London, Carpenter. Remarks on the steering and azimuth compasses. London, 1789 558. Meredith, Nicholas. .) Considerations on the utility of conductors for lightning in which the nature and properties of the lightning are explained. viii+45 pp. I plate. 8vo. London, for the author. London, 1789 Usefulness of lightning conductors; action of points; fireballs, p. 14. 559. Pascual, Antonio Raymundo. (1708-1791.) Descubrimiento de la aguja nautica, de la situacion de la America, del arte de navegar, y de un nuevo metodo para el adelantamiento en las artes y ciencias. 320 pp. Sm. 4to. Madrid, Manuel Gonzales. Madrid, 1789 The author argues at length that Raymond Lully in 1272 discovered the directive power of the magnet and its use in navigation; also that Lully's reasons for believing in the existence of a Western continent were known to Columbus. 560. Marum, Martin van. (1750-1837.) Description des frottoirs électriques d'une nouvelle construction, dont l'effet surpasse de beaucoup celui des frottoirs ordinaires. (Lettre à M. le Chev. Marsilio Landriani). 8 pp. 4to. Haarlem. Harlem, 1789 A new form of rubber for frictional machines. 561.--Nader bericht van Dr. van Marum, wegens zyne nieuwe electrische wryvers. (Algemene Konst-en Letter-Bode. Part ii., pp. 155-156.) 4to. Harlem, 1789 Letter in which the author's frictional machine is described. 562. Churchman, John. (1753-1805.) Explanation of the magnetic son. Causes of magnetic variation, p. 33. The tables give the position of the 563. Fromery, Nic (olaus) Corn (elis) de. (1770-1844.) De fulmine. Origin of atmospheric electricity: lightning, thunder, protection of houses; 564. Guetle, Johann Conrad. (1747-?.) Beschreibung verschiede- Short history of electricity with copious references and a bibliography. The whole work consists of three parts: Parts i. & ii. also known under the title: Beschreibung eines mathematischen und physikalischen Instrumenten-Kabinets; and part iii., Beschreibung elektrischer Instrumente. 565. Priestley, Joseph. (1733-1804.) Experiments and observations on different kinds of air, and other branches of natural philosophy, connected with the subject. In three volumes, being the former six volumes abridged and methodized. With many additions. 3 vols. 9 plates. Birmingham, Thomas Pearson. Birmingham, 1790 The discoveries described in this work established Priestley's reputation as a chemist and philosopher of eminence. The first edition, in three vols., appeared in 1774. 565a. (French translation.) Expériences et observations sur différentes espèces d'air. Ouvrage traduit de l'anglois par (Jacques) Gibelin. 3 vols. 9 plates. 12mo. Paris, Nyon. Paris, 1782-1783 -See also 422. 566. Segnitz, Friedrich Ludwig. ( — quam dicere solent magnetismum animalem. 34 pp. 4to. Jenae, typis Goepfertii. (Inaugural dissertation.) Jena, 1790 Dissertation on the curative power of electricity, followed by biographical notes of the author. 567. Summary view of the general principles of electricity. lxxvi pp. I plate. 8vo. (1799?) The supplement contains an extract from de Saussure's observations on atmospheric electricity; also description of the famous Harlem frictional machine, and experiments on the electric light in vacuo by William Morgan. 568. Boeckmann, Johann Lorenz. (1741-1802.) Ueber die Blitzableiter. Eine Abhandlung auf hoechsten Befehl des Fuersten ausgearbeitet. 80 pp. 12mo. Carlsruhe, M. Macklot. Construction of lightning-rods: historical notes. Carlsruhe, (1791) 569.† Condorcet, Marie Jean Antoine Nicolas Caritat, Marquis de. (1734-1794.) Éloge de M. Franklin, lu à la séance publique de l'Académie des Sciences, le 13 Nov. 1790. 42 pp. 12mo. Paris, Pyre. Paris, 1791 Appreciation of the character and work of Franklin by the celebrated French philosopher. 570. Galvani, Luigi. (1737-1798.) De viribus electricitatis in motu musculari, Commentarius. 58 pp. 4 plates. 4to. Bononiae, ex typographia Instituti Scientiarum. Bologna, 1791 First and very rare publication of Galvani on the electrical irritation of the nerves which led to the famous controversy between Galvani and Volta. 570a. Another edition. Cum Aldini dissertatione et notis. Ac cesserunt epistolae ad animalis electricitatis theoriam perti- |