_The Study of Physical Science in America._--The study of physical science in this country began with the very settlement of the country. The writings of the first Americans are strewn with sharp observations on the geography of America, on its minerals, soils, waters, plants, animals; on its climates, storms, earthquakes; on its savage inhabitants, its diseases, its medicines; and on the phenomena of the heavens as they appeared to this part of the earth. There were here, even in our earliest age, several men of special scientific inclination, such as William Wood, John Josselyn, John Sherman, John Winthrop of Massachusetts, and John Winthrop of Connecticut. Indeed, the latter was recognised as an eminent physicist even among the contemporaneous physicists of England; and in Connecticut, where he founded the city of New London, and where he was for many years Governor, he pursued with great zeal his scientific researches, carrying them even into the fatal chase for the philosopher’s stone. He was on terms of endearing intimacy with Watkins, Robert Boyle, and other great leaders of science in England; and it is said that under the menace of public calamities there, and drawn, likewise, by their friendship for Winthrop, these men had proposed to leave England, and to establish in the American colony over which Winthrop presided “a society for promoting natural knowledge.” They were, however, induced by Charles II. to remain in England; and accordingly, with the co-operation of Winthrop, who happened to be in London at the time, they founded there, instead of in New London, the association that soon became renowned throughout the world as the Royal Society. Perhaps there was no one of these early American students of nature whom it is now pleasanter to recall than the Quaker naturalist, John Bartram. Born in Pennsylvania, in 1701, he founded near Philadelphia the first botanic garden in America. He was appointed American botanist to George III., and won from Linnæus the praise of being “the greatest natural botanist in the world.” As John Bartram represents high attainments in science reached under all outward disadvantages, so John Winthrop of Harvard College represents still higher attainments in science reached under all outward advantages. A descendant of the first Governor of Massachusetts, from 1738 until his death in 1779 he served his Alma Mater with great distinction as professor of mathematics and natural philosophy. For extent and depth of learning in his special departments, he was probably the foremost American of his day. All things considered, he was probably the most symmetrical example both of scientific and of literary culture produced in America during the colonial time; representing what was highest and broadest in it, what was most robust and most delicate; a thinker and a writer born and bred in a province, but neither in thought nor in speech provincial;