OR, A TREATISE ON PILE. 61 



No. 3. Examination and Description of hair from a skull from Arica, Peru, South 

 America. Specimen presented by Prof. S. G. Morton, M. D., of Philadelphia. 



General Appearance, that of dead, dried, black hair; length, (artificial,) 3 inches; 

 shape, cylindrical ; diameter, from | to ^ T of an inch, i. e. of different filaments ; color, 

 very dark brown ; no lustre ; direction, straight and lank ; inclination, unknown ; ductility, 

 with 420 grains one inch stretched -Jfr of an inch ; elasticity, minus -^ ; tenacity, broke 

 with 470 grains ; button, spindle-shaped, dark colored ; length, T - J 7 ; diameter, J-^-Q ; 

 while that of the shaft is - 5 -J- $ of an inch ; sheath, none ; follicle, none ; shaft cortex, dark 

 colored, the scales easily disengaged; intermediate fibres, white, translucent; diameter, 

 from 2-sVo to j^Vf of an inch; easily separated by crushing the hair; apex, pointed and 

 abrupt ; one filament has a remarkable natural bifurcation ; disks, uniformly colored ; no 

 central dot. 



No. 4. Examination and Description of a portion of the scalp and hair from a skull 

 from Pisco, Peru, South America. Specimen presented by Prof. S. G. Morton, M. D., of 

 Philadelphia. 



General Appearance. The scalp is of a dark brown color, and resembles ancient tanned 

 leather. It divides into layers, viz: layer immediately beneath that in which the hair is 

 imbedded, and that in which the hair is imbedded. The arrangement is in tufts, 

 with interstices. Length, (artificial,) 3s inches; shape, cylindrical; diameter, T ^ of 

 an inch ; color, dark brown, inclining to black ; no lustre ; direction, straight and lank ; 

 inclination, at an acute angle with the epidermis ; ductility, with 370 grains one inch 

 stretched || of an inch; elasticity, with 370 grains one inch lost ff of its length; 

 tenacity, broke with 420 grains*; button, spindle, club and crook-shaped; sheath, none; 

 follicle, none ; shaft cortex easily fractured ; intermediate fibres, white, translucent ; apex, 

 abrupt and pointed ; the point minute ; disk, with a small central spot. 



No. 5. Examination and Description of hair and portions of scalp from a skull 

 of an Aztec, found in Mexico, North America. Specimen presented by Prof. S. G. 

 Morton, M. D., of Philadelphia, from a skull in the Academy of Natural Science, of 

 Philadelphia. 



General Appearance. Of the scalp, that of dandruff; length, (artificial,) 3 inches ; shape, 

 cylindrical; diameter, ^ of an inch; color, dark brown; no lustre; direction, straight 

 and lank ; inclination, unknown ; ductility, with 470 grains one inch stretched -$$ of an 

 inch ; elasticity when the weight was removed, it had lost none of its elasticity ; 



