The increase in the output for a given time obtained by the use of the Krajewski crusher has been estimated at 20 to 25% and varies with the quality of the canes; while the yield of juice or extraction is increased by I or 2%.
Some 12,500 are of Dutch extraction; these live chiefly in the districts of Utrecht and Vryheid.
It did excellent service in the hands of Graham for the extraction of gases occluded in metals.
It is used in the extraction of sugar from molasses, since it combines with the sugar to form a soluble saccharate, which is removed and then decomposed by carbon dioxide.
The extraction (as is the case with all the rare earths) is a matter of great difficulty.
