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The Dutch, too, as we have to some extent seen already, felt the horrors of Indian warfare. Kieft, the Dutch director-general, a man cruel, avaricious, and obstinate, angered the red men by demanding tribute from them as their protector, while he refused them guns or ammunition. The savages replied that they had to their own cost shown kindness to the Dutch when in need of food, but would not pay tribute. Kieft attacked. Some of the Indians were killed and their crops destroyed. This roused their revengeful passions to the utmost. The Raritan savages visited the colony of De Vries, on Staten Island, with death and devastation. Reward was offered for the head of anyone of the murderers. An Indian never forgot an injury. The nephew of one of the natives who twenty years before had been wantonly killed went to sell furs at Fort Amsterdam, and while there revenged his uncle's murder by the slaughter of an unoffending colonist. Spite of warlike preparations by Kieft and his assembly in 1641-42, the tribe would not give up the culprit. The following year another settler was knifed by a drunken Indian. Wampum was indeed offered in atonement, while an indignant plea was urged by the savages against the liquor traffic, which demoralized their young men and rendered them dangerous alike to friend and foe. But remonstrance and blood-money could not satisfy Kieft. At Pavonia and at Corlaer's Hook [footnote: now in the New York City limits, just below Broadway Ferry, East River] the Dutch fell venomously upon the sleeping and unsuspecting enemy. Men, women, and children were slaughtered, none spared. In turn the tribes along the lower Hudson, to the number of eleven, united and desperately attacked the Dutch wherever found. Only near the walls of Fort Amsterdam was there safety. The governor appointed a day of fasting, which it seems was kept with effect. The sale of liquor to the red men was at last prohibited, and peace for a time secured.

When an assay is required of a quantity of ore made up of parcels of different weight and quality, each parcel should be separately sampled and parts of each sample, bearing to each other the same proportion by weight as the original parcels, should be taken and mixed. For example, a lot of ore is made up of one parcel of A, 570 tons, one of B, 180 tons, and another of C, 50 tons; a sample representing the whole may be got by mixing 57 parts of a sample of A with 18 parts of a sample of B, and 5 parts of a sample of C. A bruising plate, like that in fig. 2, is convenient for general office work. The slab is of cast iron, about an inch thick. It is firmly supported on a solid block of wood, and pivoted for convenience in emptying. The bruising-hammer is steel-faced, about 4 inches square, and 1-1/2 inch thick. The block is firmly fixed to a small table or tressel, so that the slab is about 2 feet 6 inches from the ground. The slab is cleaned, and the sample collected with the help of a stiff-haired brush. ~Drying: Determination of Moisture.~--In practice, the moisture is generally determined by the samplers, and the proportion is specified in grains per pound on the label attached to the sample when it reaches the assay office. The method adopted is usually to dry 1 lb. = 7000 grs. of the ore in a frying-pan heated over a gas flame, or in an ordinary oven, until a cold bright piece of metal or glass is no longer damped when held over it. The loss of weight in grains = moisture.

But although "sampling" is thus distinct from "assaying," the assayer should be familiar with the principles of sampling, and rigorous in the application of these principles in the selecting, from the sample sent him, that smaller portion upon which he performs his operations. ~Sampling.~--_In the case of gases_, there is absolutely no trouble in mixing. The only difficulty is in drawing off a fair sample where, as in flues, the body of the gas is in motion, and varies a little in composition from time to time. In this case, care must be taken to draw off uniformly a sufficient volume of the gas during a prolonged period; any portion of this larger volume may then be taken for the analytical operation. _In the case of liquids_, which mix more or less easily--and this class includes metals, &c., in the state of fusion--more or less severe agitation, followed by the immediate withdrawal of a portion, will yield a fairly representative sample.

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