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62 would seem more economical to press the oil on the spot, and so save the freight upon the waste material; but the explanation is that oil must be shipped in tanks or in casks. Ships fitted with tanks would have to make the outward voyage empty, and casks, if shipped in "shooks," require expert coopers, and when soaked in oil become a prey to borers. It is possible that a new use may be found for copra as fuel for warships. Every ton of copra contains over one hundred gallons of oil besides other combustible matters, and it burns with a fierce heat. It is very easily stored and handled, and it is only one-third more bulky than coal, its disadvantage in this respect being more than compensated by its superior heating qualities and its freedom from ash. It is expensive, but as Welsh coal costs in distant stations such as China as much as £2 10s. a ton, it is only four times as dear, and in naval warfare, where quick steam is everything, the dearest fuel may often be the cheapest. It would be peculiarly suited to torpedo craft and destroyers, which are required to get up steam in a hurry, and to go short distances at enormous speed. I offer this suggestion to the Admiralty as a matter for experiment.