I'll bring a couple of cages home from work tomorrow, so we can catch the chickens and bring them all up here at once.
The inhabitants of tropical America sometimes keep fireflies in small cages for purposes of illumination, or make use of the insects for personal adornment.
Tapering ropes, tail-ropes suspended from the cages, and other means of equalization, are also employed.
If, for a twocompartment shaft, a pair of drums (or a single wide drum) be keyed to the engine shaft, with the ropes wound in opposite directions, the hoisting is " in balance," that is, the cages and cars counterbalance each other, so that the engine has to raise only the useful load of mineral, plus the rope.
Multiple-deck cages are FIG.
Cages of the size generally used in metal mines will hold from ten to fifteen and occasionally twenty men.
The time consumed in lowering the men is shortened by the use of cages having two or more decks.
While a shift of men is being lowered the miners of the preceding shift are usually raised to the surface in the ascending cages, the entire shift being thus changed in the time required for lowering.
At a few mines special man-cages are operated in separate compartments by their own engines for handling part of the men, and for tools, supplies, &c. For inclined shafts, where the mineral is hoisted in skips, the operation of raising and lowering men may not be so simple.
The number of platforms or decks varies considerably; in small mines only a single one may be used, but in the larger modern pits two-, threeor even four-decked cages are used.
In the large shafts of the Northern and Wigan districts the cages are made about 8 ft.
At Cadeby Main with four-decked cages the capacity is eight 10-cwt.
Apart, to prevent the possibility of the two cages striking each other in passing.
In Koepe's method the drum is replaced by a disk with a grooved rim for the rope, which passes from the top of one cage over the guide pulley, round the disk, and back over the second guide to the second cage, and a tail rope, passing round a pulley at the bottom of the shaft, connects the bottoms of the cages, so that the dead weight of cage, tubs and rope is completely counterbalanced at all positions of the cages, and the work of the engine is confined to the useful weight of coal raised.
This great height is necessary to obtain head-room for the cages, the landing platforms being usually placed at some considerable height above the natural surface.
In the deeper German pits, where great thicknesses of water-bearing strata have to be traversed, the first establishment expenses are so great that in order to increase output the shaft is sometimes provided with a complete double equipment of cages and engines.
The well-preserved amphitheatre, the subterranean parts of which below the arena are intact, with a main passage down the centre, a curved passage all round with holes for trap doors in its roof, and numerous small chambers, also with trap doors in their vaulted roofs for admitting the wild beasts, whose cages were on the other side of the curved passage, to the arena, are especially interesting.
There were also arrangements for flooding the arena, but these can only have been in use before the construction of the greater part of the subterranean portion with its cages, &c. The whole amphitheatre measures 489 by 381 ft., and the arena 245 by 138 ft.
Not only were they lodged in cages of tortoise-shell and ivory, with silver wires, but they were professedly esteemed as delicacies for the table, and one emperor is said to have fed his lions upon them!
The older gardens have followed too closely the idea of small cages, designed to guard an animal securely rather than to display it in a fitting environment, but if exercise, light and air are provided, animals do better in a relatively small than in a relatively large enclosure.
Sickly animals should be at once isolated, and their cages and enclosures disinfected, whilst as a matter of routine the enclosure in which any animal has died should be cleansed, and according to the results of post-mortem examination, which should be made in every case, appropriate measures of disinfection employed.
The open-air education was originally proposed by Chavannes of Lausanne, and largely carried out in the canton of Vaud by Roland, who reared his worms on mulberry trees enclosed within " manchons " or cages of wire gauze and canvas.
In 21 experiments out of 38, 55% of healthy rats living in flea-proof cages have contracted plague after receiving fleas collected from rats either dead or dying of septicaemic plague; consequently it is proved the rat flea can transmit plague from rat to rat.
Guinea-pigs placed in plague-infected houses do not contract plague if they are protected from fleas; those placed in cages protected by a border of sticky paper at least six inches in radius, which the fleas cannot jump over, do not contract plague; the others not similarly protected, do.
Strips are also woven into cages, chairs, beds and other articles of furniture, Oriental wicker-work in bamboo being unequalled for beauty and neatness of workmanship. In China the interior portions of the stem are beaten into a pulp and used for the manufacture of the finer varieties of paper.
The fowls were kept in cages by a servant, styled pullarius.