Spontaneous Generation (1749-1876) (1 janv. 1749 – 1 janv. 1876)

Description:

"Life arises spontaneously from non-living material"

Francesco Redi - Maggots

John Needham (1749) - Scientist/Catholic Priest
- Flasks w/ various broths gave rise to microorganisms even after boiling & sealing w/ a cork
*SUGGESTS SPONTANEOUS GENERATION

Lazzaro Spallanzani (1776) - Animal physiologist/priest
- No bacteria in his broths after boiling - boiled for longer periods & sealed flasks by melting glass
*NO ACCESS TO LIFE FORCE - microorganisms enter broth w/ air