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Van Helmont’s tree experiment: ..
 Jan Baptista van Helmont -First scientist to quantify his findings.
-Experimented with willow trees and identified that nutrients entered the tree from water, not soil.
-However, his initial hypothesis that the material that makes up the wood, bark and roots of a tree was incorrect as he thought it came from water.
 Nicolas-Théodore de Saussure -Quantified the carbon dioxide gas and water using the same experiment as van Helmont
-Disproves Van Helmont’s theory that the creation of the plant was based solely on water.
Van Helmont provided the tree with ..
In a series of experiments over as many as 77 days, Woodward overthrow Van Helmont’s hypothesis by discovered most of water added to plant was exhaled into the atmosphere.
(Phloem vessels)  Marcello observed that nutrients were dissolved in the water that were transported through the phloem vessels John Woodward -Through his water culture mint plants he discovered that much of the water that was taken in by the plants were expelled through pores into the atmosphere.
-Also disproved Van Helmont’s theory that water is the only substance that increased a plants mass by finding that soil was also responsible in increasing a plant’s mass.
In his experiment with a potted tree, Van Helmont disproved the ..
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