Daniel Bernoulli (1700-1782), son of Johann Bernoulli, was born in the Netherlands, but spent much of his life in Basel, Switzerland. He knew Euler in Basel when they were both young, and later he worked with Euler in Saint Petersburg for eight years. (When he left Russia, Euler took over his position as professor of mathematics). Bernoulli and Euler were close friends, and their letters discuss matters both mathematical and personal.

Euler and Bernoulli exchanges letters for most of their lives. Unfortunately, all of Euler's letters to Bernoulli during Euler's Berlin period (1741-1766) have been lost, and we have only those from Bernoulli to Euler.

For more information about Bernoulli, visit these links:

- Nicolaus Fuss, in his
*Correspondance mathématique et physique de quelques célèbres géomètres du XVIIIème siècle*, published 57 letters from Bernoulli to Euler (out of the 81 letters listed in the*Opera Omnia*). - Enestrom published four letters from Euler and two from Bernoulli in
"Der Briefwechsel zwischen Lenhard Euler und Daniel Bernoulli." These were
published in
*Bibl. math*. 7_{3}, 1906/7, pp. 126-156.

The 57 letters from Daniel Bernoulli to Euler from the Fuss Correspondence are available here. The Euler Archive will soon separate them into individual letters, but until then, they are presented here in four sections:

OO90 | Bernoulli to Euler | September, 1726 | Copy of OO90 |

OO91 | Euler to Bernoulli | November, 1726 | |

OO92 | Bernoulli to Euler | 24 December, 1726 | |

OO93 | Euler to Bernoulli | 18 January, 1727 | |

OO94 | Bernoulli to Euler | 18 February, 1727 | |

OO95 | Bernoulli to Euler | 06 June, 1729 | |

OO96 | Bernoulli to Euler | 22 September, 1733 | Copy of OO96 |

OO97 | Euler to Bernoulli | 16 February, 1734 | |

OO98 | Euler to Bernoulli | November, 1734 | |

OO99 | Bernoulli to Euler | 18 December, 1734 | Copy of OO99 |

OO100 | Bernoulli to Euler | 04 May, 1735 | Copy of OO100 |

OO101 | Bernoulli to Euler | 05 May, 1735 | |

OO102 | Euler to Bernoulli | 02 June, 1735 | |

OO103 | Bernoulli to Euler | 04 June, 1735 | Copy of OO103 |

OO104 | Bernoulli to Euler | 26 October, 1735 | Copy of OO104 |

OO105 | Bernoulli to Euler | 10 March, 1736 | Copy of OO105 |

OO106 | Bernoulli to Euler | 07 April, 1736 | |

OO107 | Bernoulli to Euler | 26 June, 1736 | |

OO108 | Bernoulli to Euler | 12 September, 1736 | Copy of OO108 |

OO109 | Bernoulli to Euler | undated, 1736 | |

OO110 | Bernoulli to Euler | 25 January, 1737 | Copy of OO110 |

OO111 | Bernoulli to Euler | 16 March, 1737 | Copy of OO111 |

OO112 | Bernoulli to Euler | 18 May, 1737 | Copy of OO112 |

OO113 | Bernoulli to Euler | 29 September, 1737 | Copy of OO113 |

OO114 | Euler to Bernoulli | 18 October, 1737 | |

OO115 | Bernoulli to Euler | 28 December, 1737 | |

OO116 | Bernoulli to Euler | 28 December, 1737 | |

OO117 | Euler to Bernoulli | 17 January, 1738 | |

OO118 | Bernoulli to Euler | 29 March, 1738 | Copy of OO118 |

OO119 | Euler to Bernoulli | 26 April, 1738 | |

OO120 | Bernoulli to Euler | 24 May, 1738 | Copy of OO120 |

OO121 | Bernoulli to Euler | 09 August, 1738 | Copy of OO121 |

OO122 | Euler to Bernoulli | 13 September, 1738 | |

OO123 | Bernoulli to Euler | 08 November, 1738 | |

OO124 | Euler to Bernoulli | 23 December, 1738 | |

OO125 | Bernoulli to Euler | 07 March, 1739 | Copy of OO125 |

OO126 | Euler to Bernoulli | 16 May, 1739 | |

OO127 | Bernoulli to Euler | 16 May, 1739 | |

OO128 | Bernoulli to Euler | 29 August, 1739 | |

OO129 | Euler to Bernoulli | 15 September, 1739 | |

OO130 | Bernoulli to Euler | 14 November, 1739 | |

OO131 | Euler to Bernoulli | 18 December, 1739 | |

OO132 | Bernoulli to Euler | 02 January, 1740 | |

OO133 | Bernoulli to Euler | 12 March, 1740 | |

OO134 | Bernoulli to Euler | March, 1740 | |

OO135 | Euler to Bernoulli | 12 April, 1740 | |

OO136 | Bernoulli to Euler | 30 April, 1740 | Copy of OO136 |

OO137 | Bernoulli to Euler | 25 June, 1740 | |

OO138 | Euler to Bernoulli | 15 September, 1740 | |

OO139 | Bernoulli to Euler | 05 November, 1740 | Copy of OO139 |

OO140 | Bernoulli to Euler | 28 January, 1741 | Copy of OO140 |

OO141 | Euler to Bernoulli | 21 February, 1741 | |

OO142 | Bernoulli to Euler | 20 September, 1741 | Copy of OO142 |

OO143 | Bernoulli to Euler | 20 January, 1742 | |

OO144 | Bernoulli to Euler | 07 March, 1742 | Copy of OO144 |

OO145 | Bernoulli to Euler | 14 April, 1742 | Copy of OO145 |

OO146 | Bernoulli to Euler | 28 July, 1742 | Copy of OO146 |

OO147 | Bernoulli to Euler | 20 October, 1742 | Copy of OO147 |

OO148 | Bernoulli to Euler | 12 December, 1742 | Copy of OO148 |

OO149 | Bernoulli to Euler | 09 February, 1743 | Copy of OO149 |

OO150 | Bernoulli to Euler | 23 April, 1743 | Copy of OO150 |

OO151 | Bernoulli to Euler | 04 September, 1743 | |

OO152 | Bernoulli to Euler | 25 December, 1743 | Copy of OO152 |

OO153 | Bernoulli to Euler | 04 February, 1744 | Copy of OO153 |

OO154 | Bernoulli to Euler | April, 1744 | Copy of OO154 |

OO155 | Bernoulli to Euler | 13 June, 1744 | Copy of OO155 |

OO156 | Bernoulli to Euler | 29 August, 1744 | Copy of OO156 |

OO157 | Bernoulli to Euler | undated, 1745 | Copy of OO157 |

OO158 | Bernoulli to Euler | 20 March, 1745 | Copy of OO158 |

OO159 | Bernoulli to Euler | 22 March, 1745 | |

OO160 | Bernoulli to Euler | 07 July, 1745 | Copy of OO160 |

OO161 | Bernoulli to Euler | 07 September, 1745 | Copy of OO161 |

OO162 | Bernoulli to Euler | 25 September, 1745 | |

OO163 | Bernoulli to Euler | 04 December, 1745 | Copy of OO163 |

OO164 | Bernoulli to Euler | 04 January, 1746 | Copy of OO164 |

OO165 | Bernoulli to Euler | 19 March, 1746 | Copy of OO165 |

OO166 | Bernoulli to Euler | 29 June, 1746 | Copy of OO166 |

OO167 | Bernoulli to Euler | 09 July, 1746 | Copy of OO167 |

OO168 | Bernoulli to Euler | 03 November, 1746 | Copy of OO168 |

OO169 | Bernoulli to Euler | 21 January, 1747 | Copy of OO169 |

OO170 | Bernoulli to Euler | 29 April, 1747 | Copy of OO170 |

OO171 | Bernoulli to Euler | 16 August, 1747 | Copy of OO171 |

OO172 | Bernoulli to Euler | 22 September, 1747 | Copy of OO172 |

OO173 | Bernoulli to Euler | 09 March, 1748 | Copy of OO173 |

OO174 | Bernoulli to Euler | 15 May, 1748 | Copy of OO174 |

OO175 | Bernoulli to Euler | July, 1748 | Copy of OO175 |

OO176 | Bernoulli to Euler | 03 September, 1748 | Copy of OO176 |

OO177 | Bernoulli to Euler | undated, 1749 | Copy of OO177 |

OO178 | Bernoulli to Euler | 16 August, 1749 | Copy of OO178 |

OO179 | Bernoulli to Euler | October, 1749 | |

OO180 | Bernoulli to Euler | 26 January, 1750 | Copy of OO180 |

OO181 | Bernoulli to Euler | 07 October, 1753 | Copy of OO181 |

OO182 | Bernoulli to Euler | April, 1754 | Copy of OO182 |

OO183 | Bernoulli to Euler | 07 March, 1767 | |

OO184 | Euler to Bernoulli | June, 1767 | |

OO185 | Euler to Bernoulli | 22 November, 1767 | |

OO186 | Bernoulli to Euler | January, 1768 | |

OO187 | Bernoulli to Euler | April, 1768 | |

OO188 | Euler to Bernoulli | 07 October, 1768 | |

OO189 | Bernoulli to Euler | 23 November, 1768 |

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