The well-known hyacinth vases did not enter Omar' mind when he wrote that 'yacinth the garden wears dropped in her lap from some once lovely head' but hyacinths, '(Chinese lilies' and other plants have been raised in water or on wet pebbles by the mid-Victorian housewife' adding to the water small percentages of potassium, calcium, magnesium, phosphate and nitrate and very minute amounts of the so-called 'trace elements,' boron, man- ganese and zinc, we have what the authors term 'nutri- ent solutions,' for which a number of detailed formulae -are given. I t has long been known that some plants, e.g., bulbs which contain their own nutriment, can grow without soil.
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