Engraving depicting Stephen Hales' experiment to demonstrate circulation in plants. Hales placed the stem of a vine in a long tube and observed that liquid rose 44 feet. Stephen Hales (1677-1761) an English clergyman, botanist, chemist and physiologist. Dated 19th century.
Crédit: Album / Universal Images Group / Universal History Archive \ UIG
Autorisations: ? Autorisation de modèle: Non - ? Autorisation de propriété: Non Questions sur les droits?
Taille de l'image: 3597 × 5830 px | 60.0 MB
Taille d'impression: 30.5 × 49.4 cm | 1416.1 × 2295.3 in (300 dpi)