One, two, or even three spiders, according to their size, the mason-fly deposits in each cell, and then closes it hermetically with clay. The spiders she has pounced upon while sunning themselves in the centre of their delicate nets, and they are hurried off in a panic to be converted into preserved provisions. Each cell being closed, the whole nest is cemented over with a thick covering of clay. In due time the young family hatch, eat their allowance of spiders, undergo their torpid change, and emerge from their clay mansion complete mason-flies.
Every variety of Ichneumon, however (in Ceylon), chooses the spider as the food for its young. It is not at all uncommon to find a gun well loaded with spiders, clay and grubs, some mason-fly having chosen the barrel for his location. A bunch of keys will invite a settlement of one of the smaller species, who make its nest in the tube of a key, which it also fills with minute spiders.
In attacking the spider, the mason-fly his a choice of his antagonist, and he takes good care to have a preponderance of weight on his own side. His reason for choosing this in preference to other insects for a preserved store may be that the spider is naturally juicy, plump and compact, combining advantages both for keeping and packing closely.
There are great varieties of spiders in Ceylon, one of which is of such enormous size as to resemble the Aranea avicularia of America. This species stands on an area of about three inches, and never spins a web, but wanders about and lives in holes; his length of limb, breadth of thorax and powerful jaws give him a most formidable appearance. There is another species of a large-sized spider who spins a web of about two and a half feet in diameter. This is composed of a strong, yellow, silky fibre, and so powerful is the texture that a moderate-sized walking-cane thrown into the web will be retained by it. This spider is about two inches long, the color black, with a large yellow spot upon the back, and the body nearly free from hair.
Some years ago an experiment was made in France of substituting the thread of the spider for the silk of the silkworm: several pairs of stockings and various articles were manufactured with tolerable success in this new material, but the fibre was generally considered as too fragile.
A sample of such thread as is spun by the spider described could not have failed to produce the desired result, as its strength is so great that it can be wound upon a card without the slightest care required in the operation. The texture is far more silky than the fibre commonly produced by spiders, which has more generally the character of cotton than of silk.
Should this ever be experimented on, a question might arise of much interest to entomologists, whether a difference in the food of the spider would affect the quality of the thread, as is well known to be the case with the common silkworm.
A Ceylon night after a heavy shower of rain is a brilliant sight, when the whole atmosphere is teeming with moving lights bright as the stars themselves, waving around the tree-tops in fiery circles, now threading like distant lamps through the intricate branches and lighting up the dark recesses of the foliage, then rushing like a shower of sparks around the glittering boughs. Myriads of bright fire-flies in these wild dances meet their destiny, being entangled in opposing spiders' webs, where they hang like fairy lamps, their own light directing the path of the destroyer and assisting in their destruction.
(Editor：world)