Show Iron Ores Formed by Bacteria Geologists are realizing more fully as they extend their studies the magnitude mag mag- magnitude of the work work done by plants and animals In building up and ten tearing ring do ya parts of the crust of the time earth Even en microscopic organisms perform performa a large huge part of this work Pasteur lon long ago ngo showed us the tile deadly power of bacteria In ht disease and their efficiency efficiency effi effi- in promoting fermentation b but lt their Influence on the fertility of at soils solis and their work In expediting rock decay decay de de- de- de cay are lire still sUll subjects of or scientific study |