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"A cubic centimetre contains 21,000,000,000,000,000,000,000 molecules," "the number of impacts received by each molecule of air during one second will be 4,700 millions. The distance traversed between each impact averages 95/1000000 of a millimetre," and so on with lines of ciphers to overawe the gaping millions with Mr. Laing's minute certainty as to the ultimate constitution of matter.

It will be at once conceived, on this hypothesis, that pressure is the resultant of the shocks of the molecules against the walls of the containing vessel, and we at once come to the demonstration that the law of Mariotte is a natural consequence of this origin of pressure; since, if the volume occupied by a certain number of molecules is doubled, the number of shocks per second on each square centimetre of the walls becomes half as much.

As the parasite breeds in the red cells of the blood, naturally its first effect is to destroy huge numbers of these, producing the typical malarial anæmia, or bloodlessness. Instead of 5,000,000 to the cubic centimetre of blood the red cells may be reduced to 2,000,000 or even 1,500,000.

Some time after my arrival, however, they brought down two fifteen centimètre Krupp guns from Ardahan, guns that had a considerably longer range than our twelve-ton Armstrongs. They gave us some trouble; however, the position of the attacking camp was changed so as to be out of range of our guns, a move in every way satisfactory to the Turkish military commander.

This orientation, probably borrowed from the Jews, was not thoroughly adopted in Christendom till the early fifth century, when it became a mos. The southern wall, whose basement is perfect, shows everywhere a thickness of 0.95 centimetre, and a total length of 8 metres 30 centimetres.

The tip of the abdomen sways, a little to the right, a little to the left, rises and falls, while the Spider moves slowly round and round. The thread paid out is single. The hind-legs draw it out and place it in position on that which is already done. Thus is formed a satin receptacle the rim of which is gradually raised until it becomes a bag about a centimetre deep.

Soon after leaving Mailly we had the privilege of beholding some of the four hundred centimetre guns of France, all prepared and ready to travel at a minute's notice along the railway lines to the section where they might be needed. Some idea of their size may be obtained from the fact that there were ten axles to the base on which they travel.

Goodale says of this experiment, "Let a young seedling of corn be grown on damp paper in the manner described in No. 1, and when the longest root is a few centimetres long let it be marked very carefully by means of India ink, or purple ink, put on with a delicate camel's-hair pencil just one centimetre apart.

On this ground alone, then, of the large original preponderance of blue light, we must raise our estimate of solar heat; and actual measurements show the same upward tendency. Until quite lately, Pouillet's figure of 1.7 calories per minute per square centimetre of terrestrial surface, was the received value for the "solar constant."

The smallest quantity of earth put in water reveals, through the microscope, besides the organic and mineral matter, a mass of beings more or less complex, moving more or less rapidly. A German author, Mr. Reimers, has calculated that every cubic centimetre of earth may contain several million germs.