p of or rows of electric or other motors forms:a valuable The Arlberg tunnel under the Vorarlberg mountain is | the ventilating pipe, giving a slight pressure of smoke part of the apparatus, since if one should be disabled there would still be ample power to insure good work- eleven kilometers (5°8… … PETERSEN'S AERIAL WAR VESSEL. coming year, this method of testing pipes and drains A disabled air ship could be disconnected at any sta- miles long, while the St. Gothard is 9 miles long. The tion, and a perfect one easily and quickly put in its may prove valuable in many instances where it is not…
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