Journal Des Scavans Research Articles

A description of an hydranlique engin, taken out of the register of the Royal Academy of the Sciences of Paris and inserted in the Journal des Scavans, 1675: Englished by the publisher,for the better examination of those that are skilfull in such engins here in England

The effect of this engin is, to throw out water to a great distance, and to what place you will,

An extract of a letter written by Signor Caflini to the author, of the Journal des Scavans, containing some advertisements to astronomers about the configurations, by him given of the satellites of Jupiter, for the years 1676, and 1677, the verification of their hypotheses

The configurations of the satellites of Jupiter, which are observed this year 1676, and which may be observed the next year, are of so great importance to the verifying of their hypotheses

A way of making all sorts of plants, tree, fruits, flowers, and legums, grow to an extraordinary bigness, communicated in the journal des scavans, as it was taken out of the small tract, entituled, instruction facile pour connoitre toutes sortes d'orangers & citroniers: Here inserted for experiment

The whole Secret consists in sowing all sorts of Grains and planting Kernels, in Beds of Earth, at the very time when the Sun enters into the Vernal Equinox , and to take them up, when they are strong enough to be transplanted, at the time of the Full Moon ; which time is alwaies to be observed, if you will take them up and replant them again.

A relation of the conferences held at Paris in the Academy Royal for the improvement of the arts of painting and sculpture, as 'tis found in the Journal des Scavans

These conferences are held once a month by divers ablemasters making reflexions and observations upon the rarest pieces in the cabinet of his Most-Christian Majesty, the Establisher of that Academy, Monsieur Colbert

A summary account of the laws of motion, communicated by Mr. Christian Hugens in a letter to the R. Society, and since printed in French in the Journal des Scavans of March 18. 1669. st. n

Before these Rules of Motion be here deliver’d, ’tis necessary to preface something, whereby the worthy Author of them may-receive what is unquestionably due to him, yet without derogating from others, with whom in substance he agreeth.

An extract of a letter of Mr. James Gregory to the publisher, containing some considerations of his, upon M. Hugens his letter, printed in vindication of his examen of the book, entitled Vera Circuli & Hyperbola Quadratura

The first occasion of the exchange of letters on this subject was given in the Journal des scavans of July 2. 1668. to which a civil return was made in Numb. 37.

Mr. Gregories answer to the animadversions of Mr. Hugenius upon his book, De vera Circuli & Hyperbolæ Quadratura; as they were publish'd in the Journal des Scavans of July 2. 1668

This answer we shall give the Reader in the same Language and Words, in which the Author of it desired, it might be inserted in this Tract, viz .

An extract of a letter written by Signor Cassini professor of Astronomy in Bononia, to Monsieur Petit at Paris, and Englished out of the Journal des Scavans; concerning severall spots, lately discover´d there in the planet Venus

To give you some account of my present studies, I shall acquaint you, that having been a good while very assiduous and carefull in making observations of venus, to fee, whether that planet did not turn about its axis, by a motion like to that of Jupiter and Mars; I met at first with many difficulties; but at last considering, that I should succeed better in my observations at a time, when Venus is at a good distance from the Earth, than when she is near thereto.

A method for finding the number of the Julian period for any year assign´d, the number of the cycle of the Sun, the cycle of the Moon, and of the indictions, for the same year, being given: together with the demonstration of that method

In these transaction, N. 18. P. 324. is a theoreme for finding the year of the Julian period, by a new and very easie method, whcih was taken out of the Journal des Scavans N. 36. as it had been proposed and communicated by the Learned Jesuite DeBill

A problem for finding the year of the Julian period by a new and very easie method

This occurs in the Journal des Scavans n°. 36. as it had been proposed and communicated by the learned Jesuit DE BILLY. viz. Multiply the solar cycle by 4845. and the lunar, by 4200. and that of the indiction, by 6916. Then divide the sum of the products by 7980. which is the Julian period: the remainder of the division, without having regard to the quotient, shall be the year required after.

Some considerations touching a letter in the Journal des Scavans of May 24. 1666

In Num. 9. of these Transactions were publish'd the schemes and descriptions of certain ways of sounding the depth of the sea without a line; and of fetching up water from the bottom of it; together with some experiments already made with the former of these two contrivances. The author of the French Journal des Scavans found good, to insert them both in his Journal of May 3. but in another of May 24. intimates, that the said schemes and their descriptions are not very clear and intelligible (he means, that they were not well understood by French readers) proposing also some difficulties, relating to that subject, and esteemed by him necessary to be satisfied, before any use could be made of the said Instruments.

An extract of a letter, written from Holland, about preserving of ships from being worm-eaten

This extract is borrowed from the French journal des Scavans of Febr. 15. 1666. and is here inserted, to excite inventive heads here, to overtake the proposer in Holland. The letter runs thus: Although you have visited our port (Amsterdam) I know not whether you have noted the ill condition, our ships are in, that return from the Indies.