Page 104, note 3. This statement, which, seen with after-lights, seems so rash, did not seem very startling half a century ago before the improvement of the microscope, and the general use resulting therefrom.
Swammerdam, a brilliant Dutch naturalist of the seventeenth century, especially noted for his minute studies of the viscera, and system of injection of vessels. Leuwenhoek, his countryman and contemporary, made notable discoveries with regard to capillary circulation and the blood corpuscles of man and animals; also in botany and entomology.
Winslow, a Dane, but worked in Paris, and wrote on purely descriptive anatomy. Eustachius of Salerno, a brilliant investigator of human structure, especially of the ear and the viscera, though less reputed than the great Flemish anatomist Andreas Vesalius, who was persecuted for daring to teach the real facts of human anatomy in face of the mistaken authority of Galen. Heister was also an anatomist.
Herman Boerhaave (1668-1738), born in Holland and educated at the University of Leyden, to which his name and teachings later gave great fame. He studied philosophy and medicine and became a distinguished practitioner and writer mainly on medical subjects. His character and great abilities won him great and lasting honors throughout Europe.
Page 105, note 1. Natura semper sibi similis is an expression of Malpighi's, though here given as the faith of the great Swedish botanist and scholar who gave his name to and took for his device the delicate little twin-flowered Linnaea of northern forests of the Old and New Worlds. Mr. Emerson delighted to find this rare flower among the older woods near Walden.