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THE ENERGY OF THE LIVING PROTOPLASM. 
few exceptions to the general rule, as observed in certain algæ and 
bacteria, which can remain alive even at temperatures above 
go 0 C. 
If we now consider again the general teaching that “the 
potential energy of the food yields the kinetic energies of the 
organism,” we must keep in mind that there is originally present 
a certain energy in the living matter, which liberates that energy 
by combustion, and that the original energy being thus intensified 
leads to the vital functions in the various organs and organisms. 
