M. Santos-Dumont at Nineteen 41 M. Santos-Dumont's First Balloon (Spherical) 43 M. Santos-Dumont's Workshop 45 "Santos-Dumont No. 1" 49 Basket of "Santos-Dumont No. 1" 52 _Showing propeller and motor._ "Santos-Dumont No. 1" 54 _Showing how it began to fold up in the middle._ "Santos-Dumont No. 5" Rounding Eiffel Tower, July 13, 1901 57 The Interior of the Aërodrome 61 _Showing its construction, the inflated balloon, and the pennant with its mystic letters._ The Fall into the Courtyard of the Trocadero Hotel 65 "_Santos-Dumont No. 5._" "Santos-Dumont No. 6"--The Prize Winner 69 Air-Ship Pointing almost Vertically Upward 73 Falling to the Sea 73 Just Before the Air-Ship Lost all its Gas 74 Losing its Gas and Sinking 74 The Balloon Falling to the Waves 75 Boats Around the Ruined Air-Ship 75 Manoeuvring Above the Bay at Monte Carlo 77 Professor John Milne 80 _From a photograph by S. Suzuki, Kudanzaka, Tokio._ Professor Milne's Sensitive Pendulum, or Seismograph, as it Appears Enclosed in its Protecting Box 81 The Sensitive Pendulum, or Seismograph, as it Appears with the Protecting Box Removed 81 Gifu, Japan, after the Earthquake of 1891 85 _This and the pictures following on pages 89, 101, 111, are from Japanese photographs reproduced in "The Great Earthquake in Japan, 1891," by John Milne and W. K. Burton._ The Work of the Great Earthquake of 1891 in Neo Valley, Japan 89 Diagram Showing Vertical and Horizontal Sections of the More Sensitive of Professor Milne's Two Pendulums, or Seismographs 93 Seismogram of a Borneo Earthquake that Occurred September 20, 1897 94 Effect of the Great Earthquake of 1891 on the Nagara Gawa Railway Bridge, Japan 101 Pieces of a Submarine Cable Picked Up in the Gulf of Mexico in 1888 108 _The kinks are caused by seismic disturbances, and they show how much distortion a cable can suffer and still remain in good electrical condition, as this was found to be._ Record made on a Stationary Surface by the Vibrations of the Japanese Earthquake of July 19, 1891 111