[485]
Stream and its prevailing currents, was of great practical service to the Coast Survey.
It was especially valuable in determining how far the soil now building up from accumulations of mud and coral debris was likely to remain for a long time shifting and uncertain, and how far and in what localities it might be relied upon as affording a stable foundation.
When, at the meeting of the American Association in the following spring, Agassiz gave an account of his late exploration, Dr. Bache, who was present, said that for the first time he understood the bearing of the whole subject, though he had so long been trying to unravel it.
The following letter was written immediately after Agassiz's return.
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Houghton, Mifflin and company, New York, Boston, 1885.
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