Paper, 'Microscopical observations on the human urethra' by Sir Everard Home 23 manuscript pages and 6 plates showing cross-sections of the urethra viewed through a microscope. The plates are found at the very end of the volume, separated from the paper. A typewritten note inserted into the paper indicates to see the back of the volume for the illustrations. Subject: Anatomy Published in Philosophical Transactions as 'Observations on the human urethra, showing its internal structure, as it appeared in the microscope of F. Bauer, Esq'. Read 1 June 1820. Abstract published in Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society of London], Volume 2, 1833. [1820]