This Day, That Year – November 16

Extracts from Letters to Henslow, a collection of letters written by Charles Darwin during his voyage on the Beagle, were published on this day in 1835.

Did you know that:

• Life preservers made of cork were patented by Napoleon Guerin on this day in 1841
• Henry Potonie, a German geologist who studied coal formation, was born on this day in 1857
• William Bonwill patented dental mallet to impact gold into cavities on this day in 1875