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goa. Another edition; Prolusiones academicae. Nunc secundo ab auctore recognitae, atque suis Indicibus illustratae. 61+ 420 pp.17 1. 12mo. Lugduni, sumptibus Jacobi Cardon et Petri Cavellat.

-See also 99, 102, 111, 213, 344, 874.

Lyons, 1627

91. Blundeville, Thomas. (1530 (?) —.) His exercises, contayning eight treatises, the titles whereof are set downe in the next printed page: which treatises are very necessary to be read and learned of all young Gentlemen that have not beene exercised in such Disciplines, and yet are desirous to have knowledge as well in Cosmographie, Astronomie, and Geographie, as also in the Art of Navigation, in which art it is impossible to profit without the helpe of these, or such like illustrations. The sixth edition corrected and augmented. 7 1.+799 pp. ill. map, tab. Sm. 4to. London, William Stansby. London, 1622

Chap. xxiiii. beginning p. 681 of this popularly-written work contains a description of the compass and its use in navigation. A method is given in Chap. xxvi. for determining the "Variation" at any place; the first edition appeared in 1594.

-See also 74.

92. Zacarie (or Zachaire, Zachariae, Zacharias), Denis. (1510-1556) Livre d'arithmétique et géometrie, avec l'art d'arpenter & mésurer toutes superficies de terre. Ensemble un traicté de la boussole. 4 1.+55+-64+30 pp.+1 1. ill. 12m0. Paris, Nicholas Rousset. Paris, 1625

This little book on the application of geometry contains an interesting chapter on the topographical use of the compass.

93. (Van Etten, Henry) pseud. (i.e. Jean Leurechon.) (1591-1670.) Recreation mathematique, composee de plusieurs problemes, plaisants et facetieux, en fait d'Arithmetique, Geometrie, Mecanique, Optiq.; et autres parties de ces belles sciences. 7 1+188 pp. 5 plates, 12mo. Paris, chez Rolet Boutonne.

Paris, 1626

The author's real name was Jean Leurechon, a French Jesuit. Problem 74. p. 94, treats of the lodestone and of needles rubbed by it. On p. 96, it is said that the "variation" beyond the Fortunate Isles is about 8°. The next paragraph refers to sympathetic magnets and the possibility of communicating with persons at a distance by means of a dial-plate and movable magnet pivoted at the center. The author does not believe that any such magnets can be found. Diagram of magnetic telegraph, p. 94. This book acquired considerable celebrity; first edition, 1624; English translation, 1633. (See Bertelli, No. 1711; Gherardi, 1799.)

93a.--Les recreations mathematiques, avec l'examen de ses problemes en Arithmetique, Geometrie, Mecanique, Optique; et autres parties de ces belles sciences. Premierement reueu par D(enis) Henrion, depuis par M. Mydorge et tout nouvelle

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ment corrige et augmente.

Cinquieme et derniere edition.

8 1.+416 pp. ill. 16m0. Paris, Cardin Besongne.

Paris, 1659

Fifth edition of the celebrated work of the French Jesuit; disproves magnetic communication between distant persons, p. 161; armed lodestones, p. 161; demagnetization, p. 165; how to find the poles of a magnet, p. 166.

93b.— —(English translation.) Mathematicall recreations; or, a collection of sundrie problemes and experiments in arithmeticke, cosmographie, astronomie, architecture, chimistrie, etc., extracted out of the ancient and moderne philosophers, now delivered into English tonge, with the examinations, corrections and augmentations (by W. Oughtred). 21 1.+286 pp.+2 1. ill. 12mo. London, for Richard Hawkins. London, 1633

Problem 67, p. 103, is the interesting part of this work, referring as it does to the variation of the compass. This translation omits the statement contained in the original edition of 1624 that along the meridian of the Fortunate Isles (the Canaries), the needle points true north and south. The magnetic telegraph is described and pictured on p. 104. The author does not believe that any magnet with such properties can be found. The action of fire and garlic on the magnet is mentioned, p. 105. 93c. Another edition. Mathematical recreations; or, a collection of many problems extracted out of the ancient and modern philosophers written first in Greek & Latin, lately compil'd in French and now in English with the examinations and augmentations of divers modern mathematicians; whereunto is added, The description and use of the double horizontal dyal, by William Oughtred. 9 1.+282 pp.+1 1.+19 pp. ill. pl. 12mo. London, for W. Leake. London, 1674

The fable about Mahomet's coffin, p. 104; magnetic declination, p. 105; sympathetic compass, p. 106; how to find the poles of a lodestone, p. 107. -See also 101, 151.

94.* Fromondus, Libertus. (1587-1653.)

Meteorologicorum libri sex.

6 1.+420 pp.+10 1. 4to. Antverpiae, ex officina Plantiniana, apud Balthasarem Moretum. Antwerp, 1627

Pulse used in calculating distance of thunder.

95. Drebbel, C(ornelius). (1572-1634.) Ein kurtzer Tractat von der Natur der Elementen, und wie sie den Wind, Regen, Blitz und Donner verursachen. Ins Hoch Teutsch uebergesetzt durch J. E. Burggraffen. 7 1.+25 pp. ill. 16mo. Franckfurt am Mayn, C. Roetell. Frankfort, 1628 Short treatise on the elements, containing a chapter, p. 16, on lightning and thunder. Bound with it is a translation of the same into Dutch, followed by a tract on the Fifth Essence permeating all things (ether?). Drebbel spent the last fourteen years of his life in London, where he was received with favor. He constructed a submarine boat in which he made a trip from Westminster to Greenwich.

95a.——Grondige oplossinge van de natuuren eygenschappen der elementen en hoc sy veroorsaken donder blixem, hitte, koude, wind, regen, hagel, sneeuw etc. En waar toe sy dienstig zijn.

The Epiftle Dedicatorie.

my felfe by the space of these forty yeeres, haue fomewhat entred (as my leafure and occafions would ferue, and at by times) partly by reading other mens writings, and partly by my owne induftrie and practize : Whereby what I haue collected, and found, this little Treatife will fhew. Which,whether it be any thing,or nothing, I do referre vnto the iudicious Readers confideration,but in special to your fauorable construction, and good acceptance.

Many yeeres fince diuers of my good friends, and among them fome honourable perfons,were very defirous that I should publifh fuch obferuations as I had collected, both before, and also after the fetting forth of D. Gilberts booke: And none more carneft herein then D. Gilbert himfelfe, vnto whom I communicated what I had obferued. of my selfe, and what I had built vpon his foundation of the Magnetifme of the earth. Both which hee liked well and wished me to publish them, as I remember at the time of our priuate conference, as may further appeare by letters that I received from him; which I haue to fhew vnder his owne hand.

But

89. BARLOW. P. 2.

Als mede een klare beschrijving van de Quinta Essentia. Second edition. 115 pp. 12mo. Rotterdam, Adriaan van Dijk. Rotterdam, 1701

-See also 104.

96.† Branca, Giovanni. (1571-?-.) Le machine, volume nuovo et di molto artificio da fare effetti maravigliosi tanto spiritali quanto di animale operatione arichito di bellisime figure con le dichiarationi a ciascuna di esse in lingua volgare et latina. 3+40+14+23 1. ill. 4to. Roma, J. Mascardi.

Rome, 1629 Collection of 63 curious engravings, 23 of which refer to hydraulic appliances and 40 to machines for various uses; contains the first suggestion of the modern steam turbine; brief descriptions in Italian and Latin.

97. Cabeo, Nicolo. (1585-1650.) Philosophia magnetica, in qua magnetis natura penitus explicatur et omnium quae hoc lapide cernuntur, causae propriae afferuntur, nova etiam pyxis construitur, quae propriam poli elevationem, cum suo meridiano, ubique demonstrat, multa quoque dicuntur de electricis et aliis attractionibus et eorum causis, additis figuris variis tam aeneis quam ligno incisis. 9 1.+412 pp.+6 1. ill. Folio. Coloniae, apud J. Kinckium. Cologne, 1629

On p. 194 of this famous work of the great Italian Jesuit will be found the first recognition of electrical repulsion. Gilbert's discoveries and theories are freely discussed, the latter often adversely. Sympathetic telegraphy disproved, p. 301; magnetic field mapped out by iron filings; also diagrams of the magnetic (lover's) telegraph. Cabeo (Cabaeus) opposed the views of Copernicus on astronomy as well as those of Gilbert on terrestrial magnetism. Copies of this first edition, (which was also published with a Ferrara imprint), are much sought after. (See No. 1711.)

98. Panciroli, Guido. (1523-1599.) Guidonis Pancirolli Rerum memorabilium pars prior (et posterior). Vol. i. Guidonis Pancirolli Rerum memorabilium sive deperditarum pars prior commentariis illustrata, et locis prope innumeris postremum aucta ab Henrico Salmuth. Vol. ii. Guidonis Pancirolli jc. clarissimi Nova reperta sive rerum memorabilium recens inventarum pars posterior. 6 1.+349 pp. +11 1.+41.+313 pp.+81. 4to. Francofurti, sumptibus Godefridi Tampachij. Frankfort, (1629)–1631

Work of the Italian jurist and antiquary on ancient arts and inventions. Vol. i. reference on p. 121 to amber as tears shed by trees and often enclosing insects. Vol. ii. the mariner's compass, p. 232; the sympathetic compasses, p. 237. The first Latin edition translated from the Italian by Salmuth was published 1599-1602.

99. Hakewill, George. (1579-1640.) An Apologie or Declaration of the power and providence of God in the government of the world. The second edition, revised, and augmented; with advertisements and tables newly annexed in the end of the

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