OF THE GLANDS OF THE SKIN. 215 



The investigation of the glandular coils themselves is very 

 easy in the axillary glands ; in the others the skin must be 

 prepared from within, and the glands sought for partly upon 

 the inner surface of the cutis, partly -in its meshes, — a method 

 which readily succeeds, with a little attention, particularly in 

 the hand, foot, and nipple. The large glands of the ball of 

 the foot of the I)og, described by Gurlt, are particularly 

 well fitted for demonstration, and still more those of the pre- 

 puce and of the integument of the udder of the Horse, which 

 lie quite loose in the subcutaneous tissue. If it be desired to 

 count the glands, their apertures may be sought for, or a piece 

 of skin of determinate size may be treated according to 

 Giraldes' method, and examined portion by portion (Krause). 

 For the study of the development of the glands, sections of the 

 fresh and dried skin of the heel and palm of embryos, may be 

 made with the double knife or razor. In embryos preserved 

 in spirit, if the sections be fine, the glands may also be very 

 well seen, especially in the first moments of the action of 

 caustic soda. 



Literature. — Breschet et Roussel de Vauzeme, 'Recherches 

 anatomiques et physiologiques sur les appareils tegumentaires 

 des animaux/ in the ' Annales des Sciences Nat./ 1834, pp. 1G7 

 and 321 (discovery of the sudoriparous glands) ; Gurlt, 

 'Vergleichende Untersuchungen iiber die Haut des Menscheu 

 uud der Haussaugethiere, besonders in Bezug auf die Abson- 

 derungsorgane des Hauttalges und des Schweisses,' in Muller's 

 'Archiv/ 1835, p. 399 (first good figures of the glands them- 

 selves). Besides these, compare especially the general works 

 of Todd and Bowman, Henle, Valentin, Hassall, and myself; 

 the above-cited treatises of Krause, myself, Simon, Von 

 Barensprung, and Wilson ; further the figures of Berrcs, 

 tab. XXIV; B. Wagner, 'Icon. Phys./ tab. XVI, fig. 9; 

 F. Arnold, 'Icon. Org. Sens./ tab. XI; and my own 'Mikr. 

 Anat./ tab. I. 



