Charles Estienne, better known by the name of _Carolus Stephanus_, was a French anatomist whose work is worthy of remembrance. Born in the early part of the sixteenth century, he was given an excellent education. He belonged to a noted Huguenot family of scholars and printers who have made the Estienne name famous. Robert Estienne, the brother of Charles, became the victim of religious persecution; he was obliged to flee to save his life, and for a time the publishing business was conducted by Charles Estienne. The latter also suffered for his faith; he was thrown into a dungeon, where he died in the year 1564. Charles Estienne wrote numerous books on literature, history, forestry and botany. His anatomical treatise, _De Dissectione Partium Corporis Humani_, appeared at Paris in 1545 with sixty-two full page plates which combine anatomical clearness, beauty of form, and artistic representation. A French translation of Estienne’s Anatomy was published in 1546. This work was printed as far as the middle of the third book as early as the year 1539: some of the plates are dated as early as 1530. The illustrations have been excellently cut in wood; many of them show the entire body, with much ornamentation, so that the proper anatomical part seems small and irrelevant. Some of the plates show the subject in picturesque and even loathsome attitudes. The text of this work is especially valuable for the history of anatomical discovery. Although he was an ardent Galenist, Estienne made numerous original observations in anatomy. He described the synovial glands, a discovery which has been credited to Clopton Havers. Estienne was the first anatomist to discover the canal in the spinal cord; he described the capsule of the liver, a tissue which bears Glisson’s name; and differentiated the eight pair from the sympathetic nerves. He was the first anatomist to see and describe the valves in the veins, which he called _apophyses venarum_— discovery which has been claimed for Jacobus Sylvius, Cannanus, Amatus and Fabricius. The question of priority in the discovery of the valves of the veins gave rise to much controversy. It is reasonable to assume that these structures were noticed independently by all of the anatomists whose names are mentioned above. [Illustration: SKULL BY DRYANDER, 1541] CHAPTER FOURTH Vesalius’s Early Life [Illustration: Illuminated capital] Andreas Vesalius, or Wesalius as the family name was inscribed prior to the year 1537, was born in Brussels on the last day of the year 1514. From astrological observations made by Jerome Cardan we learn that this event occurred about six o’clock in the morning, and under favorable stellar auspices. The placenta and caul, to which popular belief ascribed remarkable powers, were carefully preserved by the mother.