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lapping wing principle, and the roplane. Major Moore shows apping wing variety. The larg that of A. V. Roe, who recent r to Colorado to make experi Roe has five models on view, m aeroplanes, which he says emselves more than one hun ty feet. Mr. Roe told me he finished a real flying machine. six feet long and weighs with 400 pounds. With an eight Jap engine he expects to attain miles an hour. an Conquering the Air en-Powell Says Flying Ma- s have Come to Stay F. S. Baden-Powell delivered ast week to the members of the rological Society on "The Ex- the Air," Three means were service of many by which he the mysteries of skies- es and flying machines. As to it was now realized that this d delicate apparatus as not much practical application. at strides had been made in ment of the balloon, so that it ven to any predetermined goal. years ago the French Govern- the first dirigible airship, and ssessed one, if not more, that really practical air vessels of rological kites had also been ed in recent years, and instru- oy kites retained by steel wires ascended to a height of four at Aldershot kites had been roduced into the military ser- were first lifted by this means hich year the lecturer himself er of ascents up to one hun- gh, but improvements have llowed, until now men have up to a height of three thou- elevation practically beyond rifle bullets, and so high as to eronaut almost invisible. The e, said the lecturer, has come ge machines were constructed ght engines, and during the three years not only had men fully raised off he ground, been able to sustain them- air for half an hour at a time. emained to be done before it that man had veritably con- r. Wood's Helicopter Airship ed by Horizontally Placed Propellers ratory experiments for the e that is being built by Pro- t W. Wood, professor of ex- hysics in the Johns Hopkins ith Otto Luyties, a Baltimore e practically completed and construction will begin soon. ood has been carrying on ments in the Hopkins labora- ral months. The purpose of nts has been to test the lift- d the steadiness of action of lers as the means of ascen- pulsion. On the basis of the ned by Professor Wood a machine will be constructed Point under the direction of ntors. The type of machine Professor Wood and Mr.