H. Dold 
287 
Malassez, L. (1874 a). Note sur le champignon du Pityriasis simple. Arch, de 
Physiol. II. Ser., I. 451 et seq. 
Morris, Malcolm (1908). Diseases of the Skin, pp. 15, 19. 
Sabouraud, R. (1897). La seborrhee grasse et la pelade. Ann. Inst. Pasteur, xi. 
134 et seq. 
- (1902). Seborrhee, Acnes Calvitie. Paris, p. 107. 
Unna (1894). Die Histopathologie der Hautkrankheiten. Erganzungs-band zum 
Lehrb. der Path. Anat. von Dr J. Orth, pp. 234, 236, 239, 244, 246, 249, 352, 
1108, 1109. 
Whitfield (1907). Skin diseases and their treatment , p. 76. 
EXPLANATION OF PLATE XXI. 
The photo-micrographs were all taken with Leitz oil immersion objective x lj, and ocular 4. 
Stained with Fuchsin. 
Fig. 1. Scrapings of seborrhoic scalp, showing scratched-off horny cells, and Dermato- 
phyton Malassez (large round cells, bacillary and bottle forms), x 1200. 
Fig. 2. Two days’ culture of D. Malassez on ordinary agar, showing coccoid forms, 
x 1200. 
Fig. 3. Two days’ culture of D. Malassez on acid agar (Sabouraud’s medium), subGultured 
from an ordinary culture on agar (Fig. 2) showing large, round, ovoid forms, bacilli, 
and filaments with spindle-like swellings. Near the centre- two large ovoid forms, 
faintly stained, x 1200. 
Fig. 4. Two days’ culture of D. Malassez, in ordinary broth, subcultured from ordinary 
agar culture (Fig. 2), showing large round and ovoid forms, ba'cilli, “ bottles, ” and 
filaments, x 1200. 
Fig. 5. Four weeks’ gelatin stab culture of D. Malassez showing the radiating outgrowth 
along the needle track, and the “Daisy-head ” on the top. x 14. 
