OF THE GLANDS OF THE SKIN. 203 



richt, 'Ueber die Richtung der Ilaarc am mcnschlichcn 

 Korper/ in Miill. 'Arch./ 1837, p. 37; V. Laer, ' De structura 1 

 capill. hum. observationibus microscopicis illustr./ 'Dissert, 

 inaug./ Trajcct. ad Rhenum, 1841, und 'Anneliu der Chemie u. 

 Pharmacic/ Bd. 45, No. 147; G. Simon, 'Zur Entwicklungs- 

 geschichte der Haare/ Miill. 'Arch./ 1841, p. 361 ; Krause, 

 article 'Haut./ in Wagners f Handworterbuch d. Phys./ 1811, 

 Bd. II, p. 124 j Kohlrausch, 'Ueber innere Wurzelscheide 

 und Epithelium des Haares/ Miill. 'Arch./ 184G, p. 300; 

 Jasche, ' De telis epithelialibus in genere et de iis vasorum in 

 specie/ Dorpat, 1847 ; Kolliker, ' Ueber den Bau der Haar- 

 balge und Haare/ in the ' Mittheil d. ziirch., naturf./ Ges., 

 1847, p. 177; Hessling, 'Vom Haare und seinen Scheiden in 

 Froriep neue Notizen, 1848, No. 1 13 ; Langer, 'Ueber den Haar- 

 wechsel, bei Thieren und beim Menschen/ in den ' Denkschr. 

 d. Wien/ Akad., 1850, Bd. I. The comparative anatomy of 

 the hairs is treated of b}' Heusinger in Meckel's 'Arch./ 1822, 

 1823, und 'System der Histiologie/ Erdl, in 'Abh. d. Munch./ 

 Akad., Bd. Ill, ii ; Gegenbaur, in ' Yerhund. d. phys. 

 med. Gesellschaft zu Wurzburg/ 1850; Steinlin, in ' Zeit- 

 schrift, fur rationellen Medizin/ Bd. IX. The allied horny 

 tissues are described in the 'Dorpat. dissertations/ by Brockcr, 

 ' De textura et formatione spinarum/ 1849 ; Helm, ' De text, 

 et form, barbae Balsenre/ 1849 ; Schrenk, ' De formatione 

 penuse/ 1849. 



IV.— OF THE GLANDS OF THE SKIN. 



A. OF THE SUDORIPAROUS GLANDS. 



§ 65. 



The sudoriparous Glands consist of a single delicate, more 

 or less convoluted tube, which secretes the sweat. They are 

 formed over the whole surface of the skin, with the exception of 

 the concave side of the concha of the ear, of the external 

 auditory meatus, the glans penis, one lamella of the prepuce, 

 and a few other localities ; and, open upon it by numerous fine 

 apertures. 



