The Black death. A great slaughter began in Avignon in January 1348. The epidemic is presented in two ways. In the first two months was manifested with fever and bloody sputum and patients die in three days; elapsed manifested with continuous fever and swelling in the armpits and groin and patients died within 5 days.
At that time the Black Death by Ignorance was attributed to contamination caused by rats.
Comet Donati, or Donati's Comet, formally designated C/1858 L1 and 1858 VI, is a long-period comet named after the Italian astronomer Giovanni Battista Donati who first observed it on June 2, 1858. After the Great Comet of 1811, it was the most brilliant comet that appeared in the 19th century. It was also the first comet to be photographed. It was nearest the Earth on October 10, 1858.