Musschenbroek, Petrus van
,
Physicae experimentales, et geometricae de magnete, tuborum capillarium vitreorumque speculorum attractione, magnitudine terrae, cohaerentia corporum firmorum dissertationes: ut et ephemerides meteorologicae ultraiectinae
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de MAGNETE.
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Grad. # M. # Horæ # M.
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14 + # # 7 # 30
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14 # 5 # 7 # 45
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14 + # # 12 # 0
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<
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xml:space
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ſervator ſe ultra 1000 obſervationes feciſſe in eodem loco cum iiſ-
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dem Acubus, quæ omnes ſibi fuerunt ſimiles. </
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<
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xml:space
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menta plane contraria iis, quæ Cabeus Lib. </
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<
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<
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xml:space
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in eodem loco eandem perpetuo Declinationem fore, audacter pro-
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nuncians.</
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<
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<
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<
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<
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<
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xml:space
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fratris affert, notantis Acum in verticibus montium 10, 20, 50,
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imo 90 gradibus plus aberrare, quam ad eorum radicem, idque ob-
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tinere in montibus Bohemiæ & </
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<
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xml:space
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ibidem, id obſervatum in montibus Saxoniæ fuiſſe: </
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<
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radaxon ulterius examinari in locis montoſis, ut & </
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inde multum lucis doctrinæ Magneticæ adferatur; </
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<
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xml:space
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plurimi montes gerunt, etiam magnam varietatem hiſce & </
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bus obſervationibus adferre potuiſſet.</
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<
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nationem Acus Magneticæ eſſe obnoxiam perpetuis mutationibus
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in eodem Terræ loco, uti Pariſiis & </
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univerſum Terrarum orbem: </
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clinatione, in quibus Magnes directe reſpicit Boream & </
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verum ſequentianno in iis declinabit Magnes verſus Ortum vel Occa-
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ſum. </
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xml:space
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magis, ita ut perpetua in Declinatione Magnetis per Univerſam Ter-
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ram obtineat varietas; </
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<
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gneticæ, imprimis cum nondum multas poſſidemus obſervationes, & </
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<
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quas habemus earum plurimæ adhuc non ſunt cum cura ſufficienti fa-
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ctæ, præſtaret, ſi inſtituerentur eodem anno in omnibus partibus Terræ
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& </
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enim decurſus Declinationis innoteſceret, & </
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& </
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Sagaciſſimus ſummoque præditus ingenio, Edm Halleyus Syſthema
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aliquod condidit quod licet (ipſo fatente Philoſopho) rude adhuc ſit, &</
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