In the summer of 1847 Agassiz established himself in a small house at East Boston, sufficiently near the sea to be a convenient station for marine collections. Here certain members of his old working corps assembled about him, and it soon became, like every place he had ever inhabited, a hive of industry. Chief among his companions were Count Francois de Pourtales, who had accompanied him to this country; Mr. E. Desor, who soon followed him to America; and Mr. Jacques Burkhardt, who had preceded them all, and was now draughtsman in chief to the whole party. To his labors were soon added those of Mr. A. Sonrel, the able lithographic artist, who illustrated the most important works subsequently published by Agassiz. To an exquisite skill in his art he added a quick, intelligent perception of structural features from the naturalist's point of view, which made his work doubly valuable. Besides those above-mentioned, there were several assistants who shared the scientific work in one department or another. It must be confessed that this rather original establishment had the aspect of a laboratory rather than a home, domestic comfort being subordinate to scientific convenience. Every room served in some sort the purposes of an aquarium or a studio, while garret and cellar were devoted to collections. The rules of the household were sufficiently elastic to suit the most erratic student. A sliding scale for meals allowed the greatest freedom for excursions along the neighboring shores and beaches, and punctuality in work was the only punctuality demanded.