he same plane. In this class of gearing great strain is put upon the bear- stated as follows: ’ Bevel wheels act upon each other Ings; and as the latter wear, the frictional contact becomes I took skimmed morning’s milk, filled a eudiometer tube diminished, andthe usefulness of the device soon… … derstorms. wheel. The pitch line of the wheel is the cir- The increased acidity is due to the formation of lactic cle upon which the pitch is measured, and it is the cir- the power transmitted, the line of contact is increased by acid, and most probably some acetic acid, by means of the cumference…
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