1847-1850: AGE 40-43.

Excursions on Coast Survey Steamer. Relations with Dr. Bache, the Superintendent of the Coast Survey. Political Disturbances in Switzerland. Change of Relations with Prussia. Scientific School established in Cambridge. Chair of Natural History offered to Agassiz. Acceptance. Removal to Cambridge. Literary and Scientific Associations there and in Boston. Household in Cambridge. Beginning of Museum. Journey to Lake Superior. "Report, with Narration." "Principles of Zoology," by Agassiz and Gould. Letters from European Friends respecting these Publications. Letter from Hugh Miller. Second Marriage. Arrival of his Children in America.

One of Agassiz's great pleasures in the summer of 1847 consisted in excursions on board the Coast Survey steamer Bibb, then employed in the survey of the harbor and bay of Boston, under command of Captain (afterward Admiral) Charles Henry Davis. Under no more kindly auspices could Agassiz's relations with this department of government work have been begun. "My cabin," writes Captain Davis, after their first trip together, "seems lonely without you."

Hitherto the sea-shore had been a closed book to the Swiss naturalist, and now it opened to him a field of research almost as stimulating as his own glaciers. Born and bred among the mountains, he knew marine animals only as they can be known in dried and alcoholic specimens, or in a fossil state. From the Bibb he writes to a friend on shore: "I learn more here in a day than in months from books or dried specimens. Captain Davis is kindness itself. Everything I can wish for is at my disposal so far as it is possible."

Dr. Bache was at this time Superintendent of the Coast Survey, and he saw at once how the work of the naturalist might ally itself with the professional work of the Survey to the greater usefulness of both. From the beginning to the end of his American life, therefore, the hospitalities of the United States Coast Survey were open to Agassiz. As a guest on board her vessels he studied the reefs of Florida and the Bahama Banks, as well as the formations of our New England shores. From the deck of the Bibb, in connection with Count de Pourtales, his first dredging experiments were undertaken; and his last long voyage around the continent, from Boston to San Francisco, was made on board the Hassler, a Coast Survey vessel fitted out for the Pacific shore. Here was another determining motive for his stay in this country. Under no other government, perhaps, could he have had opportunities so invaluable to a naturalist.

But events were now passing in Europe which made his former position there, as well as that of many of his old friends, wholly unstable. In February, 1848, the proclamation of the French republic broke upon Europe like a clap of thunder from a clear sky. The news created great disturbances in Switzerland, and especially in the canton of Neuchatel, where a military force was immediately organized by the republican party in opposition to the conservatives, who would fain have continued loyal to the Prussian king. For the moment all was chaos, and the prospects of institutions of learning were seriously endangered. The republican party carried the day; the canton of Neuchatel ceased to be a dependence of the Prussian monarchy, and became merged in the general confederation of Switzerland.

At about the same time that Agassiz, in consequence of this change of conditions, was honorably discharged from the service of the Prussian king, a scientific school was organized at Cambridge, Massachusetts, in direct connection with Harvard University. This school, known as the Lawrence Scientific School, owed its existence to the generosity of Abbott Lawrence, formerly United States Minister at the Court of St. James. He immediately offered the chair of Natural History (Zoology and Geology) to Agassiz, with a salary of fifteen hundred dollars, guaranteed by Mr. Lawrence himself, until such time as the fees of the students should be worth three thousand dollars to their professor. This time never came. Agassiz's lectures, with the exception of the more technical ones addressed to small classes, were always fully attended, but special students were naturally very few in a department of pure science, and their fees never raised the salary of the professor perceptibly. This was, however, counterbalanced in some degree by the clause in his contract which allowed him entire freedom for lectures elsewhere, so that he could supplement his restricted income from other sources.

In accordance with this new position Agassiz now removed his bachelor household to Cambridge, where he opened his first course in April, 1848. He could hardly have come to Harvard at a more auspicious moment, so far as his social and personal relations were concerned. The college was then on a smaller scale than now, but upon its list of professors were names which would have given distinction to any university. In letters, there were Longfellow and Lowell, and Felton, the genial Greek scholar, of whom Longfellow himself wrote, "In Attica thy birthplace should have been." In science, there were Peirce, the mathematician, and Dr. Asa Gray, then just installed at the Botanical Garden, and Jeffries Wyman, the comparative anatomist, appointed at about the same time with Agassiz himself. To these we might almost add, as influencing the scientific character of Harvard, Dr. Bache, the Superintendent of the Coast Survey, and Charles Henry Davis, the head of the Nautical Almanac, since the kindly presence of the former was constantly invoked as friend and counselor in the scientific departments, while the latter had his residence in Cambridge, and was as intimately associated with the interests of Harvard as if he had been officially connected with the university.

A more agreeable set of men, or one more united by personal relations and intellectual aims, it would have been difficult to find. In connection with these names, those of Prescott, Ticknor, Motley, and Holmes also arise most naturally, for the literary men and scholars of Cambridge and Boston were closely united; and if Emerson, in his country home at Concord, was a little more withdrawn, his influence was powerful in the intellectual life of the whole community, and acquaintance readily grew to friendship between him and Agassiz. Such was the pleasant and cultivated circle into which Agassiz was welcomed in the two cities, which became almost equally his home, and where the friendships he made gradually transformed exile into household life and ties.

In Cambridge he soon took his share in giving as well as receiving hospitalities, and his Saturday evenings were not the less attractive because of the foreign character and somewhat unwonted combination of the household. Over its domestic comforts now presided an old Swiss clergyman, Monsieur Christinat. He had been attached to Agassiz from childhood, had taken the deepest interest in his whole career, and, as we have seen, had assisted him to complete his earlier studies. Now, under the disturbed condition of things at home, he had thrown in his lot with him in America. "If your old friend," he writes, "can live with his son Louis, it will be the height of his happiness." To Agassiz his presence in the house was a benediction. He looked after the expenses, and acted as commissary in chief to the colony. Obliged, as Agassiz was, frequently to be absent on lecturing tours, he could, with perfect security, intrust the charge of everything connected with the household to his old friend, from whom he was always sure of an affectionate welcome on his return. In short, so far as an old man could, "papa Christinat," as he was universally called in this miscellaneous family, strove to make good to him the absence of wife and children.

The make-up of the settlement was somewhat anomalous. The house, though not large, was sufficiently roomy, and soon after Agassiz was established there he had the pleasure of receiving under his roof certain friends and former colleagues, driven from their moorings in Europe by the same disturbances which had prevented him from returning there. The arrival among them of Mr. Guyot, with whom his personal and scientific intimacy was of such long standing, was a great happiness. It was especially a blessing at this time, for troubles at home weighed upon Agassiz and depressed him. His wife, always delicate in health, had died, and although his children were most affectionately provided for in her family and his own, they were separated from each other, as well as from him; nor did he think it wise to bring them while so young, to America. The presence, therefore, of one who was almost like a brother in sympathy and companionship, was now more than welcome. His original staff of co-workers and assistants still continued with him, and there were frequent guests besides, chiefly foreigners, who, on arriving in a new country, found their first anchorage and point of departure in this little European settlement.

The house stood in a small plot of ground, the cultivation of which was the delight of papa Christinat. It soon became a miniature zoological garden, where all sorts of experiments in breeding and observations on the habits of animals, were carried on. A tank for turtles and a small alligator in one corner, a large hutch for rabbits in another, a cage for eagles against the wall, a tame bear and a family of opossums, made up the menagerie, varied from time to time by new arrivals.

But Agassiz could not be long in any place without beginning to form a museum. When he accepted the chair offered him at Cambridge, there were neither collections nor laboratories belonging to his department. The specimens indispensable to his lectures were gathered almost by the day, and his outfit, with the exception of the illustrations he had brought from Europe, consisted of a blackboard and a lecture-room. There was no money for the necessary objects, and the want of it had to be supplied by the professor's own industry and resources. On the banks of the Charles River, just where it is crossed by Brighton Bridge, was an old wooden shanty set on piles; it might have served perhaps, at some time, as a bathing or a boat house. The use of this was allowed Agassiz for the storing of such collections as he had brought together. Pine shelves nailed against the walls served for cases, and with a table or two for dissection this rough shelter was made to do duty as a kind of laboratory. The fact is worth noting, for here was the beginning of the Museum of Comparative Zoology in Cambridge, now admitted to a place among the great institutions of its kind in the world.

In the summer of 1848 Agassiz organized an expedition entirely after his own heart, inasmuch as it combined education with observation in the field. The younger portion of the party consisted of several of his special pupils, and a few other Harvard students who joined the expedition from general interest. Beside