1619 in science

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The year 1619 in science and technology involved some significant events.

Discoveries

• Lactose is discovered by Fabriccio Bartoletti; the word lactose comes from the Latin word lac which means "milk".
• In North America, the Churchill River is discovered by Danish explorer Jens Munk, and it will be used for over 100 years as a trading route of the Hudson's Bay Company from their fort at its mouth to the interior.
• Frederick de Houtman and Jans van Edel discover the Houtman Abrolhos islands.

Astronomy

• Publication of Johannes Kepler's third law of planetary motion.
• Publication of the Jesuit Giuseppe Biancani's Sphaera mundi, seu cosmographia demonstrativa, ac facili methodo tradita in Bologna.

Births

• probable date - Daniel Whistler, English physician (d. 1684)

Deaths

• May 21 - Hieronymus Fabricius, Italian anatomist and embryologist (b. 1537)
• September - Hans Lippershey, Dutch lensmaker, credited with inventing the telescope in 1608 (b. c.1570)
• Olivier de Serres, French soil scientist (b. 1539)