Sea slug

“ The slug, called Succinea, is not strictly aquatic, but lives in damp places, and may be seen in full activity far from rivers, in meadows where the grass is wet with rain or dew; but shells of the genera Limnaea, Planorbis, Paludina, Cyclas, and others, requiring to be constantly in the water, are extremely exceptional in the loess, occurring only at the bottom of the deposit where it begins to alternate with ancient river-gravel on which it usually reposes. ”

“ Then again, if the day be wet, the slug works by day as well as by night. It is the sun and drought that he shuns, and not the light. Therefore the only effectual way to destroy slugs is to sow lime, in dust, and not slaked. The slug is wet, he has hardly any skin, his slime is his covering; the smallest dust of hot lime kills him; and a few bushels to the acre are sufficient. You must sow the lime at dusk; for then the slugs are sure to be out. Slugs come after a crop that has long afforded a great deal of shelter from the sun; such as peas and vetches. ”

“ The legitimate sport is the night hunt, the search, by the light of a lantern, of cabbage or lettuce leaves cast down in the favourite haunts of the slug. On these, on a warm night after a light rain, it may be found by the score—of all sizes, from the tiny glistening speck no larger than a pin’s head, to the full-grown animal as long and as thick as a man’s little finger. The slug-hunter recognises two species of slugs. There are others he knows, notably the great black slug of the woods, but these concern him not. ”

“ These mazy arcades and thickets maintain an unequal strife with the ocean, but the matted roots holding the soil, often promote the growth of land, and gradually appropriate portions of Neptune’s domain. The receding waters disclose an immense variety of festering life. Sea-urchins, crabs, and many nameless things struggle in the slime. Mussels, barnacles, and oysters, cling to the branches, passing half their time in the water and half out, as the tide flows and ebbs. ”

“ The production of a mucus-thread, as a means of progression through the air, has long been known in the Land-Slugs, and has been observed in seven genera, representing Limacidæ, Arionidæ, and Philomycidæ.
The Spinning-Slug (Limax filans) of authors is a myth, the habit being general, extending possibly to all Slugs of the families named. The animals are occasionally seen descending from trees, fences, rafters in greenhouses, &c, and they are easily induced to descend from small exposed objects on which they may be placed. ”

“ An ample stream once held its winding course among them, but becoming choked at the further end with weeds and fallen leaves, and branches broken by the wind, it spread into a marsh, tenanted alike by the slow, creeping blind-worm, and water-newt, the black slug, and frogs of portentous size. ”

“ The slugs, which commit their depredations in the night, creep under the leaves in the morning, and by turning up the leaves you come at the slugs, and crush them, or carry them away. But besides the immense daily labour attending this, the slug, in a field sowed with wheat, has a clod to creep under at every foot, and will not go five feet to get under a cabbage-leaf. ”

“ SEA-SLUDGE, or Salt-clod, is the surface, or that part of a saline marsh, which is deposited by the high tides. It is much richer, and less intermixed with sand, than the land which is more regularly overflowed.
Sea-sludge is an excellent manure; and though it be attainable only in a few situations, yet it deserves to be more generally employed. The best sludge is completely covered with grass: it is cut out of the marshes, to the depth of a spade, and, during the summer, is carted upon the land ”

“ Note also that most slugs have many variations in colour and markings.
Testacella haliotidea.—This genus of slugs forms a link between the naked slugs with rudimentary shells within, and the snails which live within their shells. The name Testacella, or little shell, was given by Cuvier in 1800, because this slug has a small shell at the end of the tail. Haliotidea means having a shell in the form of the marine shell Haliotis, the meaning of which again is the ear-shaped seashell, often called “Venus’ Ear.” It is subterranean in habit, and lives on worms. ”

“ The slug will devour almost any garden plant, whether it be a flower or a vegetable. They lay lots of eggs in old rubbish heaps. Do you see the good of cleaning up rubbish? The slugs do more harm in the garden than almost any other single insect pest. You can discover them in the following way. There is a trick for bringing them to the surface of the ground in the day time. You see they rest during the day below ground. So just water the soil in which the slugs are supposed to be. How are you to know where they are? They are quite likely to hide near the plants they are feeding on. ”

“ Hitherto all efforts to turn the slug to profitable use have failed, and mankind have been content to destroy without utilising it. The snail, we know, makes a good and nourishing soup, and nothing but prejudice prevents it from becoming a valuable article of food. But the snail, living as it does in its shell, has but a soft skin, while the slug possesses a coat of extraordinary toughness, which would seem to be an obstacle in the way of its ever becoming useful for culinary purposes. ”

“ The gardener one day brought in a testacella, or shelled slug. It fed upon earth-worms and was quite unlike the ordinary black or grey slug, of which we have, alas! countless thousands preying upon all the green things of the earth. This shelled slug was yellow, and seemed able to elongate its body very differently to any other species. The shell was quite small, a simple dome-shaped plate upon the anterior part of the body. I kept it for some weeks on damp moss under a tumbler, but it was often able to escapep. ”

“ A good many different kinds of slugs are found in Great Britain. The largest of all is the great gray slug, which often grows to a length of more than six inches. Then the black slug is very common in many parts of the country. It is not always black, however, for one may often find examples which are brown, or yellow, or gray, or even white. The milky slug, which has a thick creamy slime, is plentiful everywhere. ”

“ Boosey was exceedingly agreeable, and after inquiring about his friends in Melbourne, asked me to read the article I had brought. After giving a few preliminary coughs I began:
‘SLUGS.
‘“Slugs eat cabbage. They forage at night. In the morning they creep home. They are afraid of gardeners. Gardeners hate slugs because they eat the things in the garden. To catch slugs you must get up early. The captives may be thrown into a neighbouring garden. This annoys the man next door. The slug is a very quiet animal. ”

“ It is not an easy matter to study its feeding habits when it is at large, and our knowledge of its food preferences have been derived mainly from Slow-worms in captivity. It will take spiders, small earthworms, and small insects; but always shows a marked preference for the small greyish-white slug (Limax agrestis) that is so great a pest to the grower of tender vegetables. This slug the Slow-worm consumes in quantity. Dr. Gerald Leighton, in his book on the "British Lizards," says: "I can vouch for a meal that consisted of seventeen slugs, the Slow-worm being a large male sixteen inches long. ”

“ During the daytime slugs remain in hiding, lying behind the loose bark of dead trees, or under logs and large stones, or in heaps of decaying leaves. And if the weather is very hot and dry they do not come out even at night, for they very soon die if they are deprived of moisture. But on warm, damp evenings they travel for long distances in search of food, which is almost entirely of a vegetable character. In Europe every gardener knows what injury they do to gardens there, but in America the slugs are practically harmless. ”

“ Conovulus, 4-7, affects brackish marshes. Our common Slugs yield, on dissection, thin shells, which are concealed beneath the mantle, Limax, 9-12. The shells of Testacellus, 13, 14, are fixed near the end of the foot, outside. The glassy shells of Vitrina, 15, 16, do not enclose the whole Slug-like animal. The other genera of Land Snails have shells large enough to receive the animal when retracted and withdrawn for repose. ”

“ When it is alarmed it is only about half an inch long. Many slugs have shells. The horns upon their heads are weapons. Slugs travel very slowly. Once a slug had a race with a hare. The slug won. Snails are the same as slugs. ”

“ I believe the fact is, that when oysters or any other molluscous animals become sickly, they are attacked by Star-fish and other similar creatures, just as a dying snail is attacked and devoured by slugs; but I think with you, that if a Star-fish were bold enough to attack a healthy oyster, it would soon have reason to repent it.”
“I have often thought, mamma,” said Agnes; “what miserable lives oysters and other similar creatures must lead in the sea; fixed as they are to rocks, and incapable of hearing or seeing anything around them.” ”

“ CHILDREN'S TALES FOR GROWN-UPS. IX. THE UNWRITTEN TREATY.
"Be careful," said the worm to the slug, "there is one of those nasty birds over there. What ugly things they are!"
"Not half so ugly as men. Ugh!" said the slug.
"Men are big, not ugly. They don't eat worms."
"But they cut them in two with spades."
"Only by accident. There is nothing so ugly as a bloated over-grown bird eating a slender delicate worm."
"Except," said the slug, "a monstrous man crushing a tender slug under his clumsy hoofs. Birds I can tolerate. They are not so big as men." ”

“ The holes thus made may be seen on the borders of beaches, when the tide is fast receding, in rows of twenty, thirty, or more; in certain spots less numerous; for it appears that when a place proves unproductive of the food for which they are searching, they very soon take to their wings and remove to another, now and then in so hurried a manner that one might suppose they had been suddenly frightened. The contents of the stomach of those which I shot while thus occupied, were slender sea-worms, about an inch in length, together with minute shell-fish and gravel. ”

“ The animal is like a big black slug, and, in comparison with the size of the slug, the shell is very small. A slug the size of a man's fist would have a shell about an inch long. Most shell-hunters would pass by a Scutum abiguum, not thinking it had a shell embedded in its folds. The shell is found amongst rocks in sheltered places on ocean beaches. ”

“ In the general destruction of insects, the Lady-bird should always be spared, as, both in its larva and its perfect state, it lives on the larvæ of the green fly, or aphis.
Snails and Slugs are more destructive to vegetation than any kind of insect; and they are still more difficult to get rid of. There is a very small gray slug, that is [Pg 132] peculiarly injurious to plants in pots; the large grey is also very destructive, and the common garden snail. ”

“ The truest and most snail-like snails are found in greatest abundance upon high chalk-downs, heathy limestone hills, and other comparatively dry places; while the truest and most slug-like slugs are found in greatest abundance among low water-logged meadows, or under the damp fallen leaves of moist copses. The intermediate kinds inhabit the intermediate places. Yet to the last even the most thorough-going snails retain a final trace of their original water-haunting life, in their universal habit of seeking out the coolest and moistest spots of their respective habitats. ”

“ On any muddy stretch of beach, when the tide is out, you may see numbers and numbers of little twisted casts, just like those which you may find on the lawn in the garden on any warm damp morning. These are made by Lug Worms, or “logs,” as the fishermen generally call them, and they really consist of sand which the worm has swallowed during the last three or four hours. For lug worms burrow by swallowing mouthful after mouthful of sand, until they can swallow no more. They eat their way down into the sand, in fact, just as earth-worms eat their way down into the ground. ”

“ The slug is as defenceless as the pigeon, and no greater share of courage is required for slug hunting than for pigeon shooting; but whereas the one amusement is a slaughter of innocents, the other is the destruction of ravening beasts, and stands therefore in a far higher category. The slug trusts neither to speed nor fierceness; we know from story how his cousin, the snail, when attacked, put to flight a troop of tailors, by the exhibition of his horns, or, as the scientific would tell us, of his eyes on their upreared stalks. But if the slug possesses eyes, he makes no show of them. ”

“ The slugs like shallow water with a sandy bottom. On hot, sunny days when the sea is calm they lie on top of the sand, and, though they have no fins, can swim quite well. If the weather is cloudy and the sea rough they burrow into the sand and lie low. They are most easily caught on clear calm days with a circular throwing net, smaller than the ordinary throwing net but of precisely similar construction. ”

“ Many such shaws in a field give it an unsightly appearance, but beyond this there is no great harm done after all, for as the slug seldom begins its work until the plant is large and well forward, the tubers underground, though they may be of smaller size than their neighbours that have escaped the slug’s attentions, are yet sound and wholesome food enough either for man or beast. ”