36 Prof. Henry on the Conservation of Force. 
terial of the new plant, and it was for this purpose originally 
i whole 
stored away. But this, though in part correct, is not the 
truth; for if we weigh a potato prior to germination, and weigh 
the young plant afterwards, we shall find that the amount of or- 
ganic matter contained in the latter is but a fraction of that which 
was originally contained in the former. We can account in this 
i 
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