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Opis:
Lararello (Boric Acid Works). First a panoramic view of the works is displayed showing the perforation of the ground in order that vapor containing boric acid may escape. To illustrate the force by which the vapor escapes a basket placed at the mouth of one of the pipes is thrown to a height of 200 yards. The process of evaporation and condensation follows and is concluded by disclosing the method of measuring its pressure under various conditions. Volterra. Many views of this picturesque little town are displayed. The ancient Etruscan walls which surround the town are first shown. The Gate la Porte de l'Arc which is the most ancient follows. Monuments and edifices of the Medieval Period come next including the Cathedral consecrated by Pope Callistee II, in A.D. 1120. This town is noted for its industry of working alabaster which process is fully illustrated. The River Giuba. This river whose beauty has made it famous has again been chosen for a series of beautiful views along its ...
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