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| 267 | Extract of a letter of M. Euler written to M. Duhamel, 3 February 1756 |
| 363 | Notebook concerning a general theory of dioptrics |
| 520 | Essay of the theory of resistance that a prow of a ship experiences throughout its motion |
| 521 | Analytical theories. Extracts of different letters of Mr. Euler to Mr. le Marquis de Condorcet |
| 579 | Calculations on aerostatic balloons made by the late Mr. Leonhard Euler, as they were found on his blackboard, after his death on September 7, 1783 |