Good morning, Whitewater.
A new month begins with partly cloudy skies and a high of eighty-four. Sunrise is 5:46 and sunset 8:15, for 14h 28m 23s of daytime. The moon is a waning gibbous with 98.1% of its visible disk illuminated.
On this month in 1774, British scientist Joseph Priestly discovers a new gas, one that proves to be oxygen:
In August 1774 he isolated an “air” that appeared to be completely new, but he did not have an opportunity to pursue the matter because he was about to tour Europe with Shelburne. While in Paris, however, Priestley managed to replicate the experiment for others, including French chemist Antoine Lavoisier. After returning to Britain in January 1775, he continued his experiments and discovered “vitriolic acid air” (sulphur dioxide, SO2).
In March he wrote to several people regarding the new “air” that he had discovered in August. One of these letters was read aloud to the Royal Society, and a paper outlining the discovery, titled “An Account of further Discoveries in Air”, was published in the Society’s journal Philosophical Transactions.[101] Priestley called the new substance “dephlogisticated air”, which he made in the famous experiment by focusing the sun’s rays on a sample of mercuric oxide. He first tested it on mice, who surprised him by surviving quite a while entrapped with the air, and then on himself, writing that it was “five or six times better than common air for the purpose of respiration, inflammation, and, I believe, every other use of common atmospherical air”.[102] He had discovered oxygen gas (O2).
On this day in 1832, a ship prevents Black Hawk’s escape across the Mississippi:
1832 – Black Hawk’s Escape Across Mississippi Blocked
On this date the armed steamboat the Warrior reached the British Band on the Mississippi where they hoped to cross the river and escape the American troops. After being guided by a Sioux Indian, the ship which held an artillery piece, dropped anchor, making the Sauk escape virtually impossible. Black Hawk attempted to surrender to the Warrior, waving a white cloth, but the crew either did not understand or did not accept the message. The ship and its men opened fire, killing a number of unprepared Indians. [Source: Along the Black Hawk Trail by William F. Stark, p. 140-141]