The Scientific American contains exactly the kind of information about the world's industrial progress which you want to obtain. The Scientific American is neither dry nor heavy but is filled with interesting, new and timely matter of value to all. You may like to read about airships, automobiles, machinery, railways, steamships, or any one of the countless things with which we have concerned ourselves. For over sixty years every important item of news concerning the scientific and technical development of the world has been faithfully chronicled in its pages. A year's numbers contain nearly 1,000 large folio pages equal to 4,000 ordinary magazine pages, and 1,500 beautifully printed engravings. The Scientific American is read by all the family; the variety of matter suits everyone. The Notes and Queries department places a corps of trained experts at the disposal of the subscribers. The service is free to all those whose names are on our books. Those who are not familiar with this publication are invited to send for a specimen copy or better yet send $3.00 for an annual subscription. Subscriptions for six months accepted at $ 1.5 0.

Scientific American Trophy for Heavier-Than-Air Flying Machines.

Scientific American Medal Awarded Annually for Devices for Safeguarding Life and Limb.