Das entdeckte Geheimniss der Natur im Bau und in der Befruchtung der Blumen v 2

30. Insect Fertilization of Flowers This work describes Sprengel's theory of fertilization in plants that is still accepted today.  The title is within an engraved border of numbered illustrations signed Arndt. 
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30. Insect Fertilization of Flowers

This work describes Sprengel's theory of fertilization in plants that is still accepted today. 
The title is within an engraved border of numbered illustrations signed Arndt.