The year 1719 in science and technology involved some significant events some of which are enumerated here.
Botany

Johann Jacob Dillenius publishes Catalogus plantarum sponte circa Gissam nascentium.

Births

January 23 - John Landen, mathematician (d. 1790)
August 4 - Johann Gottlob Lehmann, geologist (d. 1767)
20 August 1719 Birth of Christian Mayer in Meseritsch ,Velké Meziříćí, Czech Republicr, astronomer (d. 1783)
September 27 - Abraham Gotthelf Kästner, mathematician (d. 1800)
October 20 - Gottfried Achenwall, statistician (d. 1772)

Deaths

January 12 - John Flamsteed, astronomer (b. 1646)
November 8 - Michel Rolle, mathematician (b. 1652)

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