Human physiology (Volume 2) . ces Medicales, v. 440. c An. Herz, in Anat. Physiol. Real Worterb. iv. 32, Leipz. 1821. i (Dimes, Paris, 1834. s Burdach, Physiologie, u. s. w., iv. 214. * Medical Examiner, April 4, 1840. i Introduction to Com p. Anat. translated by R. T. Gore, Lond. 1827. j Hildebrandts Handbuch der Anatomie, von E. H. Weber, Braunschweig iii. s. 125. k Journal of the Statistical Society of London, July, 1838. 72 CIRCULATION. that of the female 1 to 150; and I^ennec considered the or an tobe of a healthy size when equal to the fist of the estimat
Human physiology (Volume 2) . ces Medicales, v. 440. c An. Herz, in Anat. Physiol. Real Worterb. iv. 32, Leipz. 1821. i (Dimes, Paris, 1834. s Burdach, Physiologie, u. s. w., iv. 214. * Medical Examiner, April 4, 1840. i Introduction to Com p. Anat. translated by R. T. Gore, Lond. 1827. j Hildebrandts Handbuch der Anatomie, von E. H. Weber, Braunschweig iii. s. 125. k Journal of the Statistical Society of London, July, 1838. 72 CIRCULATION. that of the female 1 to 150; and I^ennec considered the or an tobe of a healthy size when equal to the fist of the estimates the mean weight at six or seven * weighed the hearts of thirteen subjects, in whom, iromthe general habit, the previous state of health, and the mode odeath, there was every reason to believe they were in the naturalstate. The mean was eight ounces and three drachms. * romall his data he is led to fix the mean weight of the heart, in theadult, from the 25th to the 60th year, at from 8 to 9 ounces. Fig. View of the Heart in Outline of Sternum. C. C. Clavicles. J, 2, 3, 4. 5, 6, &c. The ribs. 1, 2, 3, 4, 5, 6, ft*Cartilages of the ribs. 4. Right and left nipples, a. Right ventricle, b. Left ventricle, c. Sep-tum between the ventricles, d. Right auricle, e. Left auricle. /. The aorta, f. Needle passingthrough aortic valves, g. Pulmonary artery, g. Needle passing through valves of pulmonaryartery, h. Vena cava descendens. i. Line of direction of mitral valve ; the dotted portion poste-rior to the right ventricle, t. Needle passed into the mitral valve at its extreme left. ft. Line oftricuspid valve, o. Trachea. Dr. Clendinning carefully examined nearly four hundred heartsof persons of both sexes, and of all ages above puberty. The resultwas about nine ounces avoirdupois, much less than that obtainedrecently by Dr. John Reid,c who found the average weight of themale heart — of 89 weighed — to be 11 oz. and 1 dr. ; and of thefemale heart—of 53 w
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