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"The tuna feeding and coming down the coast," was the reply. As it drew nearer, Colin saw that the gleaming silver canopy was formed of thousands upon thousands of flying-fish, skimming through the air, dropping to the water every fifty yards or so, then, with a single twist of the screw-like tail, rising in the air for another soaring flight.

This was at lunch, and I remember the conversation then turned to the speed and build of Atlantic liners as factors in their comfort of motion: all those who had crossed many times were unanimous in saying the Titanic was the most comfortable boat they had been on, and they preferred the speed we were making to that of the faster boats, from the point of view of lessened vibration as well as because the faster boats would bore through the waves with a twisted, screw-like motion instead of the straight up-and-down swing of the Titanic.

They are "single cells" that is to say, "protoplasmic" animalcules of the simplest structure provided with a vibrating crest and tail by means of which they swim with incessant screw-like movement through the blood. They rarely exceed one thousandth of an inch in length exclusive of the tail. A peculiar species is found in the blood of the common frog, and another in that of the sewer-rat.

He says, "It is remarkable for having a sort of drum at the base of the fore wings, between the costal nervure and the subcostal. These two nervures, moreover, have a peculiar screw-like diaphragm or vessel in the interior." Catherine's on the coast of Brazil, a butterfly called Februa Hoffmanseggi, makes a noise, when flying away, like a rattle.

This must be roll'd as hard as possible, so that every Part is equally press'd to each other; then get some Tape about an Inch wide, and bind it hard about your Collar of Beef, in a Screw-like manner, till you have closed your Collar from top to bottom as tight as can be; observing to bind the top and bottom in an extraordinary manner with strong Packthread.

Crisped leaves are known in a mallow, Malva crispa, and as a variety in cabbages, parsley, lettuce and others. Screw-like stems with wide spirals are specific in the flower-stalks of Cyclamen and Vallisneria, varietal in Juncus effusus spiralis and accidental in Scirpus lacustris. Cleft leaves, one of the most general anomalies, are typical in Boehmeria biloba.

When this is done, cut two small Laths of Willow, or any other Wood, except Deal, or such as has a Turpentine Juice in it, of the length of the Fish, and lay the Fish upon the Spit, with the two Laths upon the Fish, and bind them together with a Fillet of Linnen, about an Inch wide, which must be wrapp'd round them in a Screw-like manner, and then laid down to the Fire, and basted very well with Butter, and drudged with Crumbs of Bread, and the same sort of Sweet-herbs that were used in the Mixture abovemention'd.

He says, "It is remarkable for having a sort of drum at the base of the fore wings, between the costal nervure and the subcostal. These two nervures, moreover, have a peculiar screw-like diaphragm or vessel in the interior." The noise was continued at short intervals, and could be distinguished at about twenty yards' distance: I am certain there is no error in the observation.

An aerial current to the north-westward at our present level, which had been selected on that account, carried us at a rate of some twelve miles an hour; a rate much increased, however, by the sails at the stern of the car, sails of thin metal fixed on strong frames, and striking with a screw-like motion.

All sorts of machinery are now worked by the electric motor for instance, cranes, elevators, capstans, rivetters, lathes, pumps, chaff-cutters, and saws. Of domestic appliances, figure 80 shows an air propeller or ventilation fan, where F is a screw-like fan attached to the spindle of the motor M, and revolving with its armature.