The spider's touch, how exquisitely fine!

Feels at each thread, and lives along the lino. Pope.

Ingenuity Of The Spider.

One of the largest of the European spiders is the Aranca diadema of Linnaeus, which is extremely common in our own country, and is chiefly seen during the atumnal season, in gardens, etc. The body of this species, when full grown, is not much inferior in size to a small hazel-nut: the abdomen is beautifully marked by a longitudinal series of round or drop-shaped milk-white spots, crossed by others of similar appearance, so as to represent, in some degree, the pattern of a small diadem. This spider, in the months of September and October, forms, in some convenient spot or shelter, a large round close or thick web of yellow silk, in which it deposits its eggs, guarding the round web with a secondary one of a looser texture. The young are hatched in the ensuing May, the parent insects dying towards the close of autumn. The aranea diadema being one of the largest of the common spiders, serves to exemplify some of the principal characters of the genus in a clearer manner than most others. At the tip of the abdomen are placed five papillae, or teats, through which the insect draws its thread; and as each of these papillae is furnished with a vast number of foramina or outlets, disposed over its whole surface, it follows, that what we commonly term a spider's thread, is in reality formed of a collection of a great many distinct ones; the animal possessing the power of drawing out more or fewer at pleasure; and if it should draw from all the foramina at once, the thread might consist of many hundred distinct filaments. The eyes, which are situated on the upper part or front of the thorax, are eight in number, placed at a small distance from each other, and have the appearance of the stemmata in the generality of insects. The fangs, or piercers, with which the animal wounds its prey, are strong, curved, sharp-pointed, and each furnished on the inside, near the tip, with a small oblong hole or slit, through which is injected a poisonous fluid into the wound made by the point itself, these organs operating in miniature on the same principle with the fangs in poisonous serpents File feet are highly curious, the two claws, with which each is terminated, being furnished on its under side with several parallel processes, resembling the teeth of a comb, and enabling the animal to dispose and manage, with the utmost facility, the disposition of the threads in its web, etc..

The Aranea tarantula, or Tarantula spider, of which so many idle recitals have been detailed in the works of the learned, and which, even to this day, continues in some countries to exercise the faith and ignorance of the vulgar, is a native of the warmer parts of Italy, and other warm European regions, and is generally found in dry and sunny plains. It is the largest of all the European spiders; but the extraordinary symptom supposed to ensue from the bite of this insect, as well as their supposed cure by the power of music alone, are entirely fabu-lous, and are now sufficiently exploded among all rational philosophers. The gigantic Aranea avicularia, or Bird-catching spider, is not uncommon in many parts of the East Indies and South America, where it resides among trees, frequently seizing on small birds, which it destroys by wounding with its fangs, and sucking their blood.

During the early part of the last century, a project was entertained by a French gentleman, Monsieur Bon, of Montpel-lier, of instituting a manufacture of spiders' silk; and the Royal Academy, to which the scheme was proposed, appointed the ingenious Reaumur to repeat the experiments of M. Bon, in order to ascertain how far the proposed plan might be carried : but, after making the proper trials, M. Reaumur found it to be impracticable, on account of the natural disposition of these animals, which is such as will by no means admit of their living peaceably together in large numbers. M. Reaumur also computed that 663,522 spiders would scarcely furnish a single pound of silk. Monsieur Bon, however, the first projector, carried his experiments so far as to obtain two or three pairs of stockings and gloves of this silk, which were of an elegant gray colour, and were presented, as samples, to the Royal Academy. It must be observed, that in this manufacture it is the silk of the egg-bags alone that can be used, being far stronger than that of the webs. Monsieur Bon collected twelve on thirteen ounces of these, and having caused them to be well cleared of dust, by properly beating with sticks, he washed them perfectly clean in warm water. After this, they were laid to steep, in a large vessel, with soap, saltpetre, and gum-arabic. The whole was left to boil over a gentle fire tor three hours, and was afterwards again washed to get out the soap; then laid to dry for some days, after which it was carded, but with much smaller cards than ordinary. The silk is easily spun into a fine and strong thread; the difficulty being only to collect the silk-bags in sufficient quantity

There lemains one more particularity in the history of spi ders, viz. the power of flight. It is principally in the autumnal season that these diminutive adventurers ascend the air, and contribute to fill it with that infinity of floating cobwebs, which are so peculiarly conspicuous at that period of the year. When inclined to make these aerial excursions, the spider ascends some slight eminence, as the top of a wall, or the branch of a tree; and turning itself with its head towards the wind, protrudes several threads, and, rising from its station, commits itself to the gale, and is thus carried far beyond the height of the loftiest towers, and enjoys the pleasure of a clearer atmosphere. During their flight, it is probable that spiders employ themselves in catching such minute winged insects as may happen to occur in their progress; and when satisfied with their journey and their prey, they suffer themselves to fall, by contracting their limbs, and gradually dis-engaging themselves from the thread.