It is supposed that the verdant circles so often seen in grass ground, called by country people _fairy rings_, are owing to the operations of Moles: at certain seasons they perform their burrowings in circles, which, loosening the soil, gives the surface a greater fertility and rankness of grass than the other parts within or without the ring. The larger mole-hills denote the nests or dens of the Mole beneath. The feeling of the Mole is so acute that when casting up the earth, it is sensible of very gentle pressure; hence mole-catchers tread lightly when in quest of Moles; and unless this caution is used the Mole ceases its operation, and instantly retires. Again, so acute is the smell, that mole-catchers draw the body of a captured Mole through their traps and the adjoining runs and passages to remove all suspicious odours which might arise from the touch of their fingers. During summer the Mole runs in search of snails and worms in the night-time among the grass, which pursuit makes it the prey of owls. The Mole shows great art in skinning a worm, which it always does before it eats it, by stripping the skin from end to end, and squeezing out the contents of the body. It is doubtful whether any other animal exists which is obliged to eat at such short intervals as the Mole, ten or twelve hours appearing to be the maximum of its fasting; at the end of that time it dies. Cuvier tells us that if two Moles are shut up together without food, there will shortly be nothing left of the weakest but its skin, slit along the belly! Buffon accuses Moles of eating all the acorns of a newly-set soil. Its voracity makes the Mole a great drinker: a run is always formed to a pond or ditch as a reservoir; when it is too distant, the animal sinks little wells, which have sometimes been seen brimfull. We now return to Le Court's experiments with Moles, which are very interesting. To afford proof of the rapidity with which the Mole will travel along its passages, Le Court watched his opportunity, and when the animal was on its feed at one of the most distant points from its sanctuary or fortress, to which point the Mole's high road leads. Le Court placed along the course of that road, between the animal and the fortress, several little camp colours, so to speak, the staff of each being a straw, and the flag a bit of paper, at certain distances, the straws penetrating down into the passage. Near the end of this subterraneous road he inserted a horn, the mouthpiece of which stood out of the ground. When all was ready, Le Court blew a blast loud enough to frighten all the Moles within hearing. Down went the little flags in succession with astonishing velocity, as the terrified Mole, rushing along towards his sanctuary, came in contact with the flag-straws; and the spectators affirmed that the Mole's swiftness was equal to the speed of a horse at a good round trot.