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Near Puerto Plata, during rains, one of the streams flowing down from the mountains in the Mameyes section, is covered with greasy spots thought to be petroleum that has oozed from the subsoil. Traces of petroleum have also been discovered near Neiba, and in the provinces of Pacificador and Seibo. Borings have been made only in the neighborhood of Azua.
At the base of the Cambrian strata in Sweden, which in the neighbourhood of Lake Wener are perfectly horizontal, lie ripple-marked quartzose sandstones with worm-tracks and annelid borings, like some of those found in the Harlech grits of the Longmynd. Among these are some which have been referred doubtfully to plants. These sandstones have been called in Sweden "fucoid sandstones."
The existence of artesian wells depends upon that of subterranean reservoirs and rivers, and the supply yielded by borings is regulated by the abundance of such sources. In such case the weight of such strata would be an additional, if not the sole, cause of the ascent of the water through the tubes of artesian wells.
The river borings were all wash-borings made from a pile-driver boat.
In ascending a tree you should never look higher than the brim of your hat, unless when quite still and resting on a branch; temporary blindness would be the penalty in this case. Particles of decayed bark, the borings of insects in dead wood, dust, and fragments of twigs, rush down in little streams and fill the eyes.
The conditions had been indicated in a general way by borings made before construction was begun, but they proved to be rather worse than anticipated.
"But why," I persisted, "do we not tunnel under the Ray generators and dig our way to Berlin and blow it up?" My uncle smiled indulgently. "And that has been tried too, but they can hear our borings with microphones and cut us off, just as we cut them off when they try to tunnel out and place new generators.
Mr. Sutro was of the opinion that the completion of his tunnel would enable our leading mining companies to reach a vertical depth of 5,000 feet. This great depth has never yet been attained except in a bore hole or artesian well. The deepest points to which the crust of the earth has ever been penetrated have been by means of such borings in quest of salt, coal, or water.
One man prefers heating the metal, then cooling it in the water of common beans, and heating it again for welding. Take of clean borings or turning of cast iron, 16 parts; of sal-ammoniac, 2 parts; and flour of sulphur, 1 part; mix them well together on a mortar, and keep them dry.
Within a few hours we three were at the seat of the World Government at Geneva. Grauble surrendered his charts of the secret passage and was made a formal prisoner of state, until the line of the passage could be explored by borings and the reality of its existence verified. I was in daily conference with the Council in regard to momentous actions that were set speedily a-going.
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