But the method did not become practicable until Liebig discovered a simple chemical process for dispositing a thin film of silver on a glass surface.
The town does not seem to have had a hanse, nor have there been discovered any records showing the existence of medieval trade guilds; […]
The cardinalfishes are interesting in their reproductive biology. They are mouthbrooders, in that the eggs are held, usually in the mouth of the male, until hatching; this is one of the only marine fish families to reproduce in this way.
Even the absence alone of fore-gone joy is troublesome; how much more when they wind downward into smartful extremities?
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