Abstract

References
1.
Adamson
, Lancet , ii , p. 1133 ; Proc. Roy. Soc. Med., 1914, vii (Sect. Derm.), p. 95; Brit. Journ. Derm., 1918, xxx, p. 130.
2.
Balzer
and
Ménétrier
, Arch. de Physiol. , 1888 , p. 565 .
3.
Brooke
, Trans. Manchester Path. Soc. , 1891-1892 ; Brit. Journ. Derm., 1892, iv, pp. 269-286.
4.
Crocker
, “Diseases of the Skin ,” 3rd ed., ii , p. 917 .
5.
Csillag
, Arch. f. Derm. u. Syph. , 1906 , lxxx , p. 163 .
6.
Dalous
, Ann. de Derm. et de Syph ., 1902 , 4me sér., iii , p. 469 .
7.
Dore
, Brit. Journ. Derm. , 1912 , xxiv , p. 190 .
8.
Dubreuilh
et
Auché
, Ann. de Derm. et de Syph. , 1902 , 4me sér., iii , p. 545 .
9.
Fordyce
, Journ. Cutan. Dis. , 1892 , x , p. 459 .
10.
Hartzell
, Brit. Journ. Derm. , 1904 , xvi , p. 361 .
11.
Heidingsfeld
, Journ. Cutan. Dis. , 1908 , xxvi , p. 18 .
12.
Jarisce
, Arch. f. Derm. u. Syph. , 1894 , xxviii , p. 164 .
13.
Malassez
, Arch. de Physiol. normnale et Pathol. , 1883 , pp. 123, 186, 476 .
14.
Miller
, Journ. Cutan. Dis. , 1915 , xxxiii , p. 462 .
15.
Nicolau
, Arch. de Med. expér. et d'Anat. path. , 1903 , xv , pp. 796 –819 .
16.
Paul
Norman
, “The influence of Sunlight on the production of Cancer of the Skin ,” 1918 , p. 46 , Fig. 35.
17.
Perry
; “International Atlas of Rare Skin Diseases ,” No. ix .
18.
Pick
, Arch. f. Derm. u. Syph. , 1901 , p. 201 .
19.
Pusey
, “Principles and Practice of Dermatology ,” 1907 , p. 863 .
20.
Savatard
, Brit. Journ. Derm. , 1920 , xxxii , p. 376 .
21.
Sutton
, Journ. Cutan. Dis. , 1911 , xxix , p. 480 .
22.
Unna
, “The Histopathology of the Diseases of the Skin ” (Norman Walker), 1896 , p. 1122 .
23.
Wolters
, Arch. f. Derm. u. Syph. , 1901 , lvi , pp. 89 and 197.
24.
Withers
and
Coleman
, Arch. f. Derm. u. Syph. , 1920 , ii, No. 1 , p. 27 .
