. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 525. FISH WAY. A device to enable fish to ascend falls or may consist of a series of stepped basins over which the water de-scends, turning a fall into a cas-cade, and sometimes known as afish ladder; or it may consist of achute with a sinuous track fordiminis
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 525. FISH WAY. A device to enable fish to ascend falls or may consist of a series of stepped basins over which the water de-scends, turning a fall into a cas-cade, and sometimes known as afish ladder; or it may consist of achute with a sinuous track fordiminishing the velocity and assist-ing the passage of the fish to thelevel above the dam. In the exam-ple it is an inclined chute having a series of chambers containing com-paratively still water, the current being confined to a relatively 206 NAVIGATION, VESSELS, MARINE APPLIANCES, ETC. 526. FLOATING BREAKWATER. Morris type. A A are air-tight cylinders ; B B the strutting ; C C the cables, and D D the weights at the sea bed. From the mo-tionless foundation thus formed,the framing rises through thesection of tidal and superficialaction. The sloping screenformed by the timbers presentsmeshes to the waves, by whichtheir force is arrested and theireffect destroyed. The first ideaof floating breakwaters wasprobably taken from an obser-vation of the effect producedupon waves by the presence ofsome natural obstacle in the sea, such as reeds and sea weed. Thegulf weed is a well-known instance. It has been found that, althoughits depth does not exceed a couple of feet, yet, even in strong gales, thereis perfectly calm water to leeward of it. The illustration represents aform of construction for ocean shields, breakwaters, piers, harbors, gun-banks, lighthouses, and other marine objects. 527. NETS AND SEINES. How they are made.
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