62 TRICHOLOGIA MAMMALICM ; 



tenacity, broke with 820 grains ;* button, sometimes a mere swelling of the posterior 

 extremity of the shaft, at others spindle or slightly hooked, and cracked at the lower 

 extremity ; sheath, none ; follicle, none ; shaft cortex, friable ; intermediate fibres, white ; 

 fibrils, very minute; one measured less than the -^oW f an inch; apex, pointed and 

 abrupt; no furcations; disk, has a central white spot. 



No. 6. Examination and Description of hair and a portion of scalp of the skull of 

 another Aztec, from Mexico, North America. Specimen presented by Prof. S. G. Morton, 

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

 Philadelphia. 



General Appearance of the scalp, is that of dark colored, dried dirt; when rendered 

 translucent, found to be set with hair in tufts; length, (artificial,) 1 inch; shape, cylin- 

 drical; diameter, 7 | of an inch; color, dark brown; no lustre; button, spindle-shaped, 

 dark colored, and divided in the centre; length, T ^; diameter, ^^ ; that of the shaft 

 being T -|-^ of an inch; the button, of a young hair, measured in length, ^3-5 ; in diameter, 

 J^Y ; that of the shaft being ^^ of an inch; sheath, none; follicle, none; shaft cortex, 

 friable, easily removed; intermediate fibres, white; fibrils, very minute; one was less than 

 the -j-j^-j- of an inch ; apex, pointed and abrupt ; no furcation ; disk, uniform color. 



No. 7. Examination and Description of hair and a portion of the scalp of an ancient 

 Indian, from a skull found in the interior of Brazil, South America. Specimen presented 

 by Prof. S. G. Morton, M. D., of Philadelphia. 



General Appearance. Of the scalp, that of granulated, black soil ; of the pile, in tufts 

 of coarse, black, dead hair; length, (artificial,) 5 inches; shape, cylindrical; diameter, 

 Tj-J-j of an inch; button, none or a mere swelling of the posterior extremity of the shaft 

 fractured; color, black; no lustre; sheath, none; follicle, none; shaft cortex, black, 

 opaque ; direction and inclination, unknown ; ductility, with 520 grains one inch stretched 

 ^5- of an inch; elasticity, entire; tenacity, broke with 620 grains; intermediate fibres, 

 discolored. 



In one tuft the hairs were held together, at their posterior extremity, by small portions 

 of decayed scalp, and a confused mass of young hairs, fibrils, vessels, and minute pieces 

 of a feather. The diameter of the young hairs, fibrils and vessels, vary from ^V^o to ^V ~o> 

 and smaller ; one portion of feather measured, in length, ^j, and in diameter, | T of an 

 inch. 



A thin piece of scalp, which is rendered transparent, is composed of several layers of 

 various thicknesses, and several shades of yellowish-brown color. It has, imbedded in it, 

 young hairs, fibres, fibrils, and minute objects resembling the scales of the lepisma saccha- 

 rina; one of these is in length, y^, and in diameter, ^-^ f an inch, and is marked 

 longitudinally with minute parallel lines. 



