“A supper followed in the great room of the Society. Among the eminent men present whose fame was known to us at home were Professor Ehrenberg, the philosopher of the microscopic world; the two brothers Rose; Gustav, of mineralogy, and Heinrich, of analytical chemistry; Dove, the meteorologist and physicist; Magnus, of electro-magnetism; Poggendorff, the editor of the well-known journal which bears his name; Mitscherlich, of general and applied chemistry, besides many others almost equally distinguished. We received a warm welcome to Berlin, and throughout the evening the most kind and cordial treatment.”[32] We, too, had the pleasure of eating and drinking with all these great men. We had the satisfaction also, among the papers read, to hear one by our friend Professor Ehrenberg, on microscopic forms of life which exist in the bottom of the Atlantic, under the enormous pressure of a thousand feet of water. They are found in a fine calcareous mud or chalk which covers the sea-bottom, and which was fished up from this and still greater depths by Lieutenant Maury, of the United States’ coast survey. Ehrenberg, as a scientific man, enjoys the singular distinction, we might almost say felicity, not only of having discovered a new world, but of living to see it very widely explored, and of having himself been, and still being, its chief investigator. His microscope and his pencil are as obedient to him as ever, eye and hand as piercing, as steady, and as truthful as ever; and, to all appearance, microscopic investigation, and the classification of microscopic life, must assume a new phase under the guidance of some new genius, before Ehrenberg cease both himself to steer, and mainly to man and work, the ship which he built, and rigged, and launched, and for so many years has guided on its voyage of discovery.