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platter-shaped, that is, have a major and a minor axis through their body. The major axis a-b is dished upon the arc of a circle whose radius is considerably greater than the arc of the circle upon which the body of the minor axis c-d is dished, there being consequently a greater curvature in the blade in the direction of its minor axis than in its major axis. Fig. 1 is an elevation of a pro- peller, which can be adjusted to any desired pitch. Fig. 2 is a sec- tion on the line 2-2 of Fig. 1. Figs. 3 and 4 are diagrammatic sections on the line 3-3 of Fig. 1 and one of the blades taken on the line 4-4 of Fig. 1, respectively. The inventor is Mor- gan B. Miller, of San Jose, Cal, FLUID-PROPELLED BOAT. The boat shown in the accompanying drawings is designed for propulsion by means of a large volume of air and gas introduced beneath the forward por- tion of the boat in such manner that it will give the boat a forward impulse and at the same time provide a cushion of gas and air betwen the water and the under side of the boat. The lifting effect is further intensified by planes ex- tended from the sides of the boat. Means are provided whereby the air used for propelling the boat is removed from above and in front of the boat: so"as' to produce in that direction 4 partial vacuum which will ten@'toaraw the vessel forward ana upWafd? so aiding the propulsion "of 308 oat' and causing it' 'to' glidé over the: surface' df the water. eer Looe 'Fig. 1 is a longtitudinal section through the boat, showing forward apron or false bow forming a passage through which the gas, vapor -or other fluid is discharged aft. Fig. 2 is a THE MARINE REVIEW Wy EL SMe tre rise a a E al Cin Pig. 2. transversé section on the tine #-x look- ing aft, showing keels arranged to pre- vent the gas and air from collecting un- der one side when the boat is in im- perfect trim and to insure an air con- iit Te tact over the whole surface of. the bot-. tom of the boat. Fig. 3 is a transverse section on the line +-+ looking forward, The inventor. is Christopher John Lake, of Bridgeport, Conn, i ee ' Engineer Specialties. LIFE-SAVING STEAMER SNOHOMISH. 'The steamer Snohomish of the United States Revenue Cutter Service, the first vessel ever, designed and built entirely for life saving work, reached Neah Bay on the Alaskan coast safely after her journey of nearly 20,000 miles from the ship yard of the Pusey & Jones Co., Wilmington, Del. The construction of this vessel by the goy- ernment is the direct owtcome of the wreck of the Valencia in which 136 lives were lost. The entrance to Puget Sound through the Straits of Juan de Fuca is particularly dangerous and during the past half century it is estimated that nearly 700 lives have been lost there. Doubtless many on board the Valencia would have been saved had it been possible for some craft to reach them as the wreck stayed afloat for 36 hours after strik- ing. . Congress ordered the establishment at Neah Bay of a first-class ocean- going life saving steamer or tug to be seaworthy under all conditions and to be fitted with every known provision for life saving. The United States Revenue Cutter Service invited the Lidgerwood Manufacturing Co. to sub- mit a study for a small sized marine cableway, capable of carrying pas- Lire' Saving: Tuc SNOHOMISH AND R¥VENUE Curtek IrasKa 'Trstrnc LmcGERWwoOD- MILLER Marine Breecuss Buoy, Aru NDEL Bay, Marytanp, NovemBer, 1908. °"