Popular science monthly . idea of theimportance to thiscountry of surveys ofits coasts may be gainedby recalling to mindthat the coast line ofthe United States andAlaska, measured alongits general trend, ex-ceeds e!e\cn thousandfive h mid red miles inlength. To representthe actual shore line which must besurveyed and which includes all theislands, ba\s, sounds, and rivers in thetidal belt, these figures reach the largetotal of ninety-one miles; andto this must be added the shore line ofForto , the Hawaiianand the Philippine Islands, whose coastline is t
Popular science monthly . idea of theimportance to thiscountry of surveys ofits coasts may be gainedby recalling to mindthat the coast line ofthe United States andAlaska, measured alongits general trend, ex-ceeds e!e\cn thousandfive h mid red miles inlength. To representthe actual shore line which must besurveyed and which includes all theislands, ba\s, sounds, and rivers in thetidal belt, these figures reach the largetotal of ninety-one miles; andto this must be added the shore line ofForto , the Hawaiianand the Philippine Islands, whose coastline is twehe thousand statute miles. Coaling a Liner with an Elevator. An endless bucket-chain passes into the barge and thence up the conveyor to the dischargingpoint at the top of the chute. This loader has coaled the Vaterland in twenty-one hours SPEED and certainty are the twoprincipals upon which the greatsteamships which ply between con-tinents are operated. They are per-mitted only a liiiiited number of days inport; they must be swiftly unloaded andcleaned; and they must be no lessswiftly loaded, and made ready for all these o()erations, the machinewhich is in greatest demand is the onethat can put the cargo aboard in lesstime and at less than anothermachine. Especiall) is this true in tak-ing aboard coal. The ocean greyhoundswhich carry from five thousand tons tonine thousand tons of coal, and whicharc permittet! onl)- two or three days totake on such an immense cargo, musttherefore be loaded in the most rapid aswell as the most ec<jn()mical way. Cf)aling shi[)s by the old-fashioiiedhoist-uperated tubs was a slow and expensive
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
