165--Paradoxa hydrostatica novis experimentis evicta. Nuper ex anglico sermone in latinum versa. 23 1+240 pp., 3 plates. 16mo. Roterdami, ex officina Arnoldi Leers. Rotterdam, 1670 Phenomena and laws of hydrostatics discussed. English edition, 1666. -See also 146.

166. Lana, Francesco; (Lana-Terzi); (Tertius de Lanis). (1631-1687.) Prodromo ouero saggio di alcune inuentioni nuoue premesso all'Arte Maestra Opera che prepara il P. Francesco Lana Bresciano della Compagnia di Giesu: Per mostrare li piu reconditi principij della Naturale Filosofia, riconosciuti con accurata Theorica, nelle piu segnalate inuentioni, ed isperienze sin'hora ritrouate da gli scrittori di questa materia et altre nuoue dell' autore medesimo. 41.+252 pp., 20 plates. Folio. Brescia, per li Rizzardi. Brescia, 1670

Signaling by means of lights and flags, p. 44; method of weighing air, p. 52; balloons, p. 57; thermometer invented by author, p. 64; hygrometer, p. 68; telescope, p. 169; microscope, p. 214; air-ships and other inventions illustrated. The author, an Italian Jesuit, was Professor of Natural Philosophy in Brescia, his native city.

-See also 197, 321.

167 Boyle, Robert. (1627-1691.) Tractatus de cosmicis rerum qualitatibus, cosmicis suspicionibus, temperie subterranearum regionum, temperie submarinarum regionum, fundo maris, quibus praemittitur introductio ad historiam qualitatum particularium, Accessit denique tractatus de absoluta quiete in corporibus. Omnia ex anglica in latinam linguam conversa. 7 parts. 61.60+40+42+64+30+24 pp.+21.+57 pp.+1 1. 16mo. Amstelodami, apud Johannem Janssonium. Amsterdam, 1671 The first tract treats of the cosmic qualities of bodies; the second, the temperature of subterranean and submarine regions.

168.Tractatus scripti a Roberto Boyle; ubi, I. Mira aeris (etiam citra calorem) rarefactio detecta. II. Observata nova circa durationem virtutis elasticae aeris expansi. III. Experimenta nova de condensione aeris solo frigore facta, ejusque compressione sine machinis. IV. Ejusdem quantitatis aeris rarefacti et compressi miri discrepans extensio. 71 pp., 16m0. Londini, impensis Henrici Herringman. London, 1671

Rarefaction and compression of air, with original experiments.
-See also 146.

169. Kircher, Athanasius. (1601-1680.) Ars magna lucis et umbrae, in X libros digesta. Quibus admirandae lucis et umbrae in mundo, atque adeo universa natura, vires effectusque uti nova, ita varia novorum reconditorumque speciminum exhibitione, ad varios mortalium usus penduntur. Editio altera priori multo auctior. 810 pp., ill., 34 plates. Folio. Amstelodami, apud Joannem Janssonium. Amsterdam, 1671

Comprehensive work on horography, astronomy and conics; reference to magnetic phenomena, p. 693. There is an error of 100 pp. in the pagination. First edition, 1643.

-See also 102.

170. Guericke, Otto von. (1602-1686.) Experimenta nova Magdeburgica de vacuo spatio primum a G. Schotto, nunc vero ab ipso auctore perfectius edita, variisque aliis experimenta aucta, quibus accesserunt simul certa quaedam de aeris pondere circa terram de virtutibus mundanis et systemate mundi planetario. 8 1.244 pp.+2 1., ill., 2 plates, portr. Folio. Amstelodami, apud Joannem Janssonium. Amsterdam, 1672

Copies of this first edition are now very rare. This remarkable work on experimental philosophy ranks next to Gilbert's in the number and importance of the electrical discoveries described. Electric conduction and repulsion, the discharging power of points, the dissipation of charge by flames, the light due to electrification, the crepitating noises of small sparks are all recognized, pp. 147-150. The globe of sulphur, first of frictional machines, p. 148. Folio plate showing the Magdeburg experiment; also other noteworthy illustrations. (See No. 142.)

171. Rohault, Jacques. 15 plates. 16mo.

(1620-1675.) Traité de physique.
Amsterdam, Jacques le jeune.

2 vols.

Amsterdam, 1672

Standard work of the time on physics, first edition, 1671. Chapter viii., Part iii., p. 254, treats of the magnet; the magnetic condition of crosses on church-spires, p. 281; declination in Paris, p. 296; effects of air, rust, heat, p. 299; amber and jet, p. 302; lines of force due to rubbed amber, p. 303; lightning and thunder, p. 363; the ringing of bells during electric storms, p. 371. A Latin translation with notes, made by Dr. Samuel Clarke, was used in the University of Cambridge prior to the publication of Newton's Principia in 1687.

171a. (Latin translation.) Tractatus physicus Gallice emissus et
recens Latinitate donatus per Th. Bonetum, D. M. cum
animadversionibus Antonii Le Grand. 2 vols., pl., 8vo.
Londini, G. Wells.
London, 1682

Translation from the French edition of 1672. Part iii. contains a chapter
on the magnet, p. 141; lines of force, p. 156; declination at Paris, p. 161;
amber and jet, p. 165; lightning and thunder, p. 196.
--See also 260.

172. Boyle, Robert.

(1627-1691.) Essays of the strange subtilty, determinate nature, great efficacy of effluviums, to which are annext new experiments to make fire and flame ponderable, together with a discovery of the perviousness of glass. 41.+69 pp.+1 1.+74 pp.+5 1.+85 pp.+3 1. 8vo. London, for M. Pitt. London, 1673

The first essay treats of the lodestone and its effluvium; the second, of electricity as a material emanation.

-See also 146.

173. Pfundt, Ehrenfried.

(-) Disputatio physica de magnete. 14 1. Sm. 4to. Leucopetrae, F. Bruehl. Weissenfels, (1673) Historical essay on the magnet. Some views of Kircher and Schott discussed. 174. Boyle, Robert. (1627-1691.) New experiments about the preservation of bodies in Vacuo Boyliano. I 1.+17 pp. 12mo. London, M. Pitt. London, 1674

Beer soured by thunder, p. 1o; not so when in vacuo, p. 11.