The Demonstrations usually took place four times a year, and were called Public Anatomies, because the subject was generally a public body--that is to say, it was a felon executed for his misdeeds. There was also an indefinite number of Private Anatomies. The attendance of surgeons at the Public Anatomies was compulsory. The attendance at the Private Anatomies was by invitation. It was illegal for any surgeon to dissect a human body in the City of London, or within a radius of seven miles, without permission of the Barber Surgeons' Company; and in 1573 the Company's Records for May 21st contain the minute: "Here was John Deane and appointed to bring in his fine of ten pounds (for having an Anatomy in his house contrary to an order in that behalf) between this and Midsummer next"--an enormously heavy punishment when we remember the relative value of money in those days. Whenever a surgeon wished to dissect a particularly interesting subject, it was termed a Private Anatomy, and it was generally performed at the Hall of the Company after due permission had been asked for and obtained, the surgeon inviting his own friends and pupils, the Company inviting whom it chose.
Every effort was made to insure the punctual attendance at the public or compulsory anatomies, for it was enacted in 1572 that every man of the Company using the mystery or faculty of surgery, be he freeman, foreigner, or alien stranger, shall come unto the Anatomy lecture, being by the beadle warned thereto. And for not keeping their hour, both in the forenoon and also in the afternoon, and being a freeman, shall forfeit and pay at every time fourpence. The foreigner (or one who was not free of the Company) in like manner, and the stranger sixpence. The said fines and forfeits to be employed by the anatomists for their expenses. Excuses were sometimes admitted, for a few years earlier Robert Mudsley "hath licence to be absent from all lecture days without payment of any fine because he hath given over exercising of the art of Surgery and doth occupy only a silk shop and shave." In later years, the higher the position of the defaulter in the Company, the heavier was his fine for non-attendance; so that the assistants of the Company, who corresponded to the Council of the present Royal College of Surgeons, were fined 3s. 4d. for each lecture they missed.