ScientificAmerican1918-06-15.jpg Scientific American 1907-09-14ThumbnailsScientific American 1907-09-14ThumbnailsScientific American 1907-09-14ThumbnailsScientific American 1907-09-14ThumbnailsScientific American 1907-09-14Thumbnails
Torpedo-motor boats in action.