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Sometimes it may be advisable to dry 10 grams, in which case multiplying the loss by 10 will give the percentage. The dried ore should be transferred to a weighing-tube (fig. 3), and reserved for the subsequent determinations. The weighing-tube with the ore must be marked, and kept in a desiccator. Most ores and inorganic substances can be dried, and their moisture determined by the loss in this way. When, however, the substance contains another somewhat volatile ingredient, it is exposed over sulphuric acid in a desiccator for two days (if _in vacuo_, all the better), and the loss determined. Moisture in dynamite should be determined in this way. When water is simply mechanically mixed with a substance it presents but little difficulty. The combined water is a different matter. Slaked lime, even when perfectly dry, contains much water; and if the water of soda crystals were separated and frozen, it would occupy a volume equal to that of the original crystals. Perfectly dry substances may contain much water, and this combined water is retained by different materials with very unequal vigour. Sodium sulphate and sodium phosphate crystals lose water even when exposed under ordinary conditions to dry air. Soda crystals when heated melt, and at a moderate temperature give off their water with ebullition. The temperature at which all the water is given up varies with each particular salt; the actual determination of the water in each case will require somewhat different treatment. Such determinations, however, are seldom required; and from a practical point of view this combined water causes no trouble.

Breakfast was scarcely over at Hanz Toodleburg's before the neighbors, one after another, began to drop in to shake Tite by the hand, and welcome him home, and say "God bless you." Many of them brought little presents, to show how true and heart-felt was the friendship they bore him. And when he went down into the village he found himself surrounded by friends, all anxious to shake his hand, and to welcome him back, and to hear something concerning his voyage. In short, he was an object of curiosity as well as respect, for at that day there was a mysterious interest attached to a young man who had been a voyage round the world, it being associated with spirit and daring of a remarkable kind.

In her foreign wars Carthage depended upon mercenary troops, which her great wealth enabled her to procure in abundance from Spain, Italy, and Greece, as well as from Libya. Sardinia and Corsica were among her earliest conquests, and Sicily was also one of the first objects of her military enterprise. The Phoenician colonies in this island came under her dominion as the power of Tyre declined; and having thus obtained a firm footing in Sicily, she carried on a long struggle for the supremacy with the Greek cities. It was here that she came into contact with the Roman arms. The relations of Rome and Carthage had hitherto been peaceful, and a treaty, concluded between the two states in the first years of the Roman republic, had been renewed more than once. But the extension of Roman dominion had excited the jealousy of Carthage, and Rome began to turn longing eyes to the fair island at the foot of her empire. It was evident that a struggle was not far distant, and Pyrrhus could not help exclaiming, as he quitted Sicily, "How fine a battle-field are we leaving to the Romans and Carthaginians!"

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