Transcriber’s note: This version of the text cannot represent certain typographical effects. Italics are delimited with the '_' character as _italic_. The illustrations with a caption have been replaced with [Illustration figure x: caption]. The few minor errors, attributable to the printer, have been corrected. Please see the transcriber’s note at the end of this text for details regarding the handling of any textual issues encountered during its preparation. ---------------------------------------------------------------- REPORT OF AN AUTOPSY ON THE BODIES OF CHANG AND ENG BUNKER, COMMONLY KNOWN AS THE SIAMESE TWINS BY HARRISON ALLEN, M.D., PROFESSOR OF COMPARATIVE ANATOMY AND ZOÖLOGY IN THE UNIVERSITY OF PENNSYLVANIA, SURGEON TO THE PHILADELPHIA HOSPITAL, ETC. PHILADELPHIA: COLLINS, PRINTER, 705 JAYNE STREET. 1875. AUTOPSY OF THE SIAMESE TWINS. [Illustration Figure 1: Fig. 1. The twins in the acquired position (E. R., C. L.). From a photograph taken in St. Petersburg, 1870. ] NOTE. The word “Report” used in the title of my paper is to be read as referring to the post-mortem appearances only, and not to the Report of the Commission as appointed by the College. The ante-mortem history prefixed to my paper was written in conjunction with Prof. Pancoast. H. ALLEN. REPORT OF AN AUTOPSY ON THE BODIES OF CHANG AND ENG BUNKER, COMMONLY KNOWN AS THE SIAMESE TWINS. By HARRISON ALLEN, M.D., PROFESSOR OF COMPARATIVE ANATOMY AND ZOÖLOGY IN THE UNIVERSITY OF PENNSYLVANIA, SURGEON TO THE PHILADELPHIA HOSPITAL, ETC. [Read April 1, 1874.] ------- ANTE-MORTEM HISTORY. Chang and Eng Bunker were born near Bangkok, Siam, in 1811, their father being a Chinaman, their mother a native of Siam, bred by a Chinese father.[1] ----- Footnote 1: For this statement see an article in Lippincott’s Magazine, March, 1874. ----- The twins were united by a band extending from the junction of the abdominal and thoracic cavities, anteriorly, constituting the variety in teratology known as _Omphalopagus xiphodidymus_.