The top standard is extra virgin olive oil classified as having an absolutely impeccable taste and aroma.
It may be more conveniently prepared by passing the vapour of sulphur over red hot charcoal, the unccndensed gases so produced being led into a tower containing plates over which a vegetable oil is allowed to flow in order to absorb any carbon bisulphide vapour, and then into a second tower containing lime, which absorbs any sulphuretted hydrogen.
This oil was formerly used for illuminating purposes.
The Mataura beds are largely of estuarine formation; they contain oil shales and gas springs.
Sharks are caught in enormous numbers with hook and harpoon; the flesh is considered by some to have aphrodisiacal properties; the dried fins and tails are exported to China; the oil is used for smearing boats.
There is a general tendency to obesity, which is much admired by the Moors in their women, young girls being stuffed like chickens, with paste-balls mixed with honey, or with spoonfuls of olive oil and sesame, to give them the necessary corpulence.
Look at that hanging lower lip! what a huge sulk and pout is there! a sulk and pout, by carpenter's measurement, about twenty feet long and five feet deep; a sulk and pout that will yield you some 500 gallons of oil and more.
The sardines of the west coast of France, which are tinned in oil for export, are immature fish of the same stock as those taken on the coasts of Cornwall; they are 5 to 71 in.
Taking these figures as a basis, the total yield of oil from an acre of petroliferous territory would be a little over 5000 barrels of 42 U.S. gallons.
Inventors, and even at the present day processes are being patented, having for their object the boiling out of fruits with water or salt solutions, so as to facilitate the separation of the oil from the pulp by gravitation.