1672 ⟶ Marcello Malpighi describes chick development
Marcello Malpighi published the first description of chick d...
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🥚 William Harvey's Conclusion on Animal Development
William Harvey concluded that all animals, including mammals, develop from eggs, and spontaneous generation of any animal from mud or excrement was an impossibility.⟶
BiologyEmbryologyWilliam HarveySpontaneous GenerationReproduction17th CenturyScientific RevolutionDevelopmentZoology
🪰 Francesco Redi disproves spontaneous generation using fly maggots
Francesco Redi disproved spontaneous generation by showing that fly maggots only appear on pieces of meat in jars if the jars are open to the air. Jars covered with cheesecloth contained no flies.⟶
Spontaneous GenerationFrancesco RediBiologyGerm Theory17th CenturyExperimentationItalyBiogenesisMicrobiology
Italy🐛 Jan Swammerdam studies epigenesis in insects
EpigenesisInsect BiologyJan SwammerdamBiology17th CenturyDevelopmental BiologyNetherlandsEmbryology
Netherlands🐣 Marcello Malpighi describes chick development
Marcello Malpighi published the first description of chick development, including the formation of muscle somites, circulation, and nervous system.⟶
EmbryologyMarcello MalpighiDevelopmental Biology17th CenturyBiologyItalyCirculationNervous System
Italy🐣 Kaspar Friedrich Wolff Argues for Epigenesis
Kaspar Friedrich Wolff argued that the tissues of a developing chick form from nothing and are not simply elaborations of already-present structures in the egg.⟶
BiologyEmbryologyEpigenesisKaspar Friedrich WolffDevelopmental Biology18th CenturyPreformationism
Germany