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446 of the coral reefs of the world. Five years would have been required for the preparation of this crowning work which would have borne the same relation to his coral-reef studies what his "Three Cruises of the Blake" did to his early deep-sea work—an epitome of the whole subject. For eighty-two years the Agassiz father and son had been active leaders in science, and he hoped for five more years of productivity. But this was not to be. He had for several years been suffering from an impairment of the circulation, and had retreated for rest and recreation to the genial climate of Egypt and southern Europe.

He was returning from England in the steamship Adriatic and never did he appear to be in happier mood than upon the night of the twenty-sixth of March, 1910, but on the morning of the twenty-seventh he failed to appear, and when his son Maximilian entered his father's cabin it was seen that he had fallen into his last long sleep. Many a guarded secret had the ocean revealed to him, and it was fitting that far from the sight of land with only the waves around there came to him the mystery of death.

When I was young and struggling, his hand befriended me, and his great mind gave direction to the thought of the life I have led, and I think upon his spirit with gratitude and reverence, for he was my master in science.