When they are caught by the leg and cannot get into the water to drown themselves, they very frequently gnaw the limb off. They are commonly caught under water or close to the edge, and dive immediately with the trap and go to gnawing and are quackled and drowned in a moment, though under other circumstances they will live several minutes under water. They prefer to gnaw off a fore leg to a hind leg, and do not gnaw off their tails. He says the wharf rats are very common on the river and will swim and cross it like a muskrat, and will gnaw their legs and even their tails off in the trap. These would be times that tried men's souls, if men had souls to be tried; aye, and the souls of brutes, for they must have souls as well as teeth. Even the water-rats lead sleepless nights and live Achillean lives. There are the strong will and the endeavor. Man, even the hunter, naturally has sympathy with every brave effort, even in his game, to maintain that life it enjoys. The hunter regards with awe his game, and it becomes at last his medicine.[507] * * * * * Of Cadew or Case worms there are the Ruff-coats or Cockspurs, whose cases are rough and made of various materials, and the Piper Cadis or Straw-worm, made of reed or rush, and straight and smooth. * * * * * Carlyle's works are not to be studied,—hardly re-read. Their first impression is the truest and the deepest. There is no reprint. If you look again, you will be disappointed and find nothing answering to the mood they have excited. They are true natural products in this respect. All things are but once, and never repeated. The first faint blushes of the morning gilding the mountain-tops, with the pale phosphorus and saffron-colored clouds,—they verily transport us to the morning of creation; but what avails it to travel eastward, or look again there an hour hence. We should be as far in the day ourselves, mounting toward our meridian. There is no _double entendre_ for the alert reader; in fact the work was designed for such complete success that it serves but for a single occasion. It is the luxury of wealth and art when for every deed its own instrument is manufactured. The knife which sliced the bread of Jove ceased to be a knife when that service was rendered. * * * * * For every inferior, earthly pleasure we forego, a superior, celestial one is substituted. To purify our lives requires simply to weed out what is foul and noxious and the sound and innocent is supplied, as nature purifies the blood if we will but reject impurities.