AN

EXAMINATION

OF

PHRENOLOGY;

In Two Lectures,

DELIVERED TO THE STUDENTS OF THE COLUMBIAN COLLEGE, DISTRICT
OF COLUMBIA, FEBRUARY, 1837.

BY THOMAS SEWALL, M.D.,

PROFESSOR OF ANATOMY AND PHYSIOLOGY.

PUBLISHED BY REQUEST.

LONDON:

JAMES S. HODSON,

DEPOT FOR AMERICAN LITERATURE,

112, FLEET STREET.

1838.

509.

J S. Hodson, Printer, 15, Cross Street, Hatton Garden.

EXPLANATION OF THE PLATES.

Plate I.

Exhibits the name, form, size, and position of the phrenological organs, as represented on the figured head of Mr. Combe. It also shews the form and application of the craniometer.

Plate II.

Shews by a horizontal section, the thickness of the skull of an adult male, a robust waterman. It also exhibits a horizontal section of the brain. Fig. 1. the forepart of the skull. Fig. 2, the thickness of the skull. Fig. 3, the fissure in which the falx of the duramater is situated, which divides the right and left hemispheres of the brain. Fig. 4, the falx of the duramater turned back. Fig. 5, the cortical or pulpy part of the brain. Fig. 6, the medullary or fibrous portion of the brain. Fig. 7, the grooves which separate the convolutions of the brain. Fig. 8, the corpus callosum, or great commissure of the brain.

Plate III.

Shews, by a horizontal section, the skull of a delicate female, aged about 25. Fig. 1, the forepart of the skull. Fig. 2, the thickness of the skull.

Plate IV.

Shews, by a vertical section, the skull of an adult male, and was furnished me by N. R. Smith, M.D., Professor of Surgery in the University of Maryland. Fig. 1, the