In glasses filled with water, bulbous roots, such as the hyacinth,
narcissus, and jonquil, are blown. The time to put them in is from
September to November, and the earliest ones will begin blowing about
Christmas. The glasses should be blue, as that colour best suits the
roots; put water enough in to cover the bulb one-third of the way up,
less rather than more; let the water be soft, change it once a week, and
put in a pinch of salt every time you change it. Keep the glasses in a
place moderately warm, and _near to the light_. A parlour window is a
very common place for them, but is often too warm, and brings on the
plants too early, and causes them to be weakly.--_Ibid_.
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