. History of the counties of Dauphin and Lebanon : in the commonwealth of Pennsylvania ; biographical and genealogical . he least change inthe composing elements, and that the lighter andmore thoroughly disintegrated particles would becarried farther from the borders and precipitated ina more changed condition. It is also evident that ifthis redistributed material (including the ores), un-altered in its constituent parts, was subjected to theproper heat it would again assume almost, if not pre-cisely, the same characteristics and apjjearance as ithad in its former crystalline condition. The fe
. History of the counties of Dauphin and Lebanon : in the commonwealth of Pennsylvania ; biographical and genealogical . he least change inthe composing elements, and that the lighter andmore thoroughly disintegrated particles would becarried farther from the borders and precipitated ina more changed condition. It is also evident that ifthis redistributed material (including the ores), un-altered in its constituent parts, was subjected to theproper heat it would again assume almost, if not pre-cisely, the same characteristics and apjjearance as ithad in its former crystalline condition. The few rea-sons here briefly advanced for fixing the geologicalposition of the Cornwall iron-mines and other relatedores in Triassic or Mesozoic red sandstone may not beconclusive, but they furnish the basis for a reasonableand consistent explanation of the phenomena andgeological peculiarities exhibited in these interestingand important deposits of ore and the accompanyingrocks. Richard Cawling Taylor, an English geolo-gist, made a professional survey of the ore-banks Ikon-Ore Hills.—The Cornwall ore-banks. CORNWALL ORE-BANK. way has been constructed, ascending to the summiton a grade of two hundred feet to the mile. Theroad-bed is made of ore, which is the only ballastused. This spiral railway was designed by WilliamLorenz, then resident engineer of the Lebanon Val-ley Railroad, and its construction obviates the neces-sity of using teams to haul the ore to the foot of themountain. It winds in the shape of a spiral, or rathercorkscrew, several times around the Big Hill to itssummit, and has sidings constructed to divide theface of the hill into terraces at different railroads extend to the other two hills, allcentering in such a manner that the empty cars canbe distributed by the locomotive to the mines alongthe terraces on any part of the hills, aud after beingloaded can be collected again and taken to market onthe North Lebanon Railroad. The ore is
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