Produced by PM Phil Trans, Jonathan Ingram, Keith Edkins and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by the Bibliotheque nationale de France (BnF/Gallica) at http://gallica.bnf.fr) Transcriber's note: A few typographical errors have been corrected: they are listed at the end of the text. The errata on pp. 70, 118, 162, 310, 352, 367 & 407 have been applied to the text. * * * * * _PHILOSOPHICAL_ TRANSACTIONS: GIVING SOME ACCOMPT OF THE PRESENT Undertakings, Studies, and Labours OF THE INGENIOUS IN MANY CONSIDERABLE PARTS OF THE WORLD _Vol I._ For _Anno_ 1665, and 1666. In the _SAVOY_, Printed by _T. N._ for _John Martyn_ at the Bell, a little without _Temple-Bar_, and _James Allestry_ in _Duck-Lane_, Printers to the _Royal Society_. * * * * * TO THE Royal Society. _It will not become me, to adde any Attributes to a Title, which has a Fulness of Lustre from his _Majesties_ Denomination._ _In these Rude Collections, which are onely the Gleanings of my _private_ diversions in broken hours, it may appear, that many Minds and Hands are in many places industriously employed, under Your Countenance, and by Your Example, in the pursuit of those Excellent Ends, which belong to Your Heroical Undertakings._ _Some of these are but the Intimations of large Compilements. And some Eminent Members of Your _Society_, have obliged the Learned World with Incomparable _Volumes_, which are not herein mention'd, because they were finisht, and in great Reputation abroad, before I entred upon this Taske. And no small Number are at present engaged for those weighty Productions, which require _both_ Time and Assistance, for their due Maturity. So that no man can from these Glimpses of Light take any just Measure of Your Performances, or of Your Prosecutions; but every man may perhaps receive some benefit from these Parcels, which I guessed to be somewhat conformable to Your Design._ _This is my Solicitude, That, as I ought not to be unfaithful to those Counsels you have committed to my Trust, so also that I may not altogether waste any minutes of the leasure you afford me. And thus have I made the best use of some of them, that I could devise; To spread abroad Encouragements, Inquiries, Directions, and Patterns, that may animate, and draw on_ Universal Assistances. _The _Great God_ prosper You in the Noble Engagement of Dispersing the true Lustre of his Glorious Works, and the Happy Inventions of obliging Men all over the World, to the General Benefit of Mankind: So wishes with real Affections,_ Your humble and obedient Servant _HENRY OLDENBURG._ {1} * * * * * _Numb._ 1. PHILOSOPHICAL _TRANSACTIONS._ * * * * * _Munday_, _March_ 6. 1664/5. * * * * * The Contents.