Leibniz: Journal Articles on Natural Philosophy

Introduction
A Unitary Principle of Optics, Catoptrics and Dioptrics [June 1682]
New Demonstrations Concerning the Resistance of Solids [July 1684]
A Brief Demonstration of a Notable Error by Descartes and others concerning a law of nature according to which they maintain that God always conserves the same quantity of motion in matter, a law which they also misuse in mechanics [March 1686]
A Brief Comment by the Abbé D. C., showing Mr. G. G. Leibniz the paralogism contained in the preceding objection [Abbé de Catelan, September 1686]
A Reply by Mr. L. to the Abbé D. C., contained in a letter written to the Editor of these Nouvelles on 9th January 1687, concerning what was said by Mr. Descartes: that God always conserves in nature the same quantity of motion [February 1687]
Comment by the Abbé D. C. on Mr. L s response with regard to Mr. Descartes s principle of mechanics; in Article 3 of these Nouvelles, February 1687 [Abbé de Catelan, June 1687]
Response by Mr. L. to the Comment by the Abbé D. C. in Article 1 of these Nouvelles for the month of June 1687, in which he attempted to defend a Law of Nature proposed by Mr. Descartes [September 1687]
On Optical Lines and other matters [January 1689]
A Sketch Concerning the Resistance of a Medium and the motion of heavy bodies projected in a resisting medium [January 1689]
An Essay on the Causes of the Celestial Motions [Tentamen de motuum coelestium causis] [February 1689]
Observations on the Cause of Gravity and its Properties [D. Papin, April 1689]
On the Isochronous Line along which a heavy body descends without acceleration, and on the controversy with the Abbé D. C. [April 1689]
On the Cause of Gravity, and a defence of the author s own view on the true laws of nature against the Cartesians [May 1690]
A Reply to the articles that the illustrious J. B. published in the May issue of these Acta [July 1690]
An Opinion about the Motive Forces of Mechanics, offered by D. Papin against the objections of the distinguished G. G. L. [D. Papin, January 1691]
Addition to the Sketch on the Resistance of the Medium published in these Acta in February 1689 [April 1691]
On the Line into which a flexible body curves itself under its own weight, and its remarkable usefulness for discovering any number of mean proportionals and logarithms, by the author G.G.L. [June 1691]
On Solutions to the Problem of the Catenary or Funicular, and to other problems proposed by Mr. I. B. in the Acta of June 1691 [September 1691]
On the Laws of Nature and true estimation of motive forces, against the Cartesians: a Reply to the arguments proposed by Mr. P. last January in these Acta, p. 6 [September 1691]
General Rule for the Composition of Motions [September 1693]
Two Problems Constructed by Mr. Leibniz, employing the general rule of the composition of motions that he just published [September 1693]
A Specimen of Dynamics, for the disclosing of the admirable laws of nature concerning the forces of bodies and their mutual actions, and reducing them to their causes [April 1695]
A Short Note on p. 357 ff. of the December Acta of 1695 [March 1696]
An Excerpt from a Letter of G. G. L. that he wrote to a friend in favour of his physical hypothesis about the motions of the planets, once inserted in these Acta (Febr. 1689) [October 1706]
Letters from Mr. von Leibniz to Mr. Hartsoeker, with the replies of Mr. Hartsoeker [March 1712]
Letter from Mr. von Leibniz to Mr. Hartsoeker, 12 July 1711 [April 1712]