act like bellows filling with air andthus floating the boat. There is no record that the in-vention was ever tested much lessput into practice. Soon the at-tention of passengers and commercewas drawn away from the rivers torailroad lines, and the need of sucha device as Lincoln had made,dwindled.… … Patent on Tliii Dgvice for Freeing a Boat That Had Run .^ground use. A few experts who have viewedthe contraption consider it highlyimpiactical. But while Lincolns own inventionmay never have been put to use,he did have a marked respect fornatural science and invention. Itw^as during his…
