How A Snail Breathes

The breathiug operation in a snail is one of the qneerest processes imaginable and is carried on without the least sernblance of lungs. The orífice through which he takes his supply of "the breath of Hfe" is of course called the mouth, notithstanding that it is situated in the side of his great snckerlike foot. Tlie process of breathing is not carried on with anything like regularity, as it is in most creatures, the mouth simply opening occasionally to let in a supply of fresh air, which is expelled by the same opening as soon as the oxygen has been exhausted. The snail's peculiar mouth is provided with a tongue set with hundreds of fine teeth.