'895-] 463 [MiUer. 
consists of an outer lamella of cornified substance about 3 h- in 
thickness running parallel with the surface and joined, by 
exceedingly delicate obUque lamellae, with an inner lamella, 
not quite so thick. This inner layer is for the most part 
directly in contact with the stratum granulosum, but in places is 
separated (probably artificially) from the latter by a distinct space. 
Immediately beneath the cornified layer is a tolerably well- 
defined stratum granidosmn one or two cells thick. This layer 
is not, as stated by most authors, continuous in a given section, 
but appears and disappears irregularly, showing that the sheet 
of tissue is in reahty cribriform. ^ 
In none of my preparations can 1 find the slightest trace of a 
stratum lucidum. This, however, is to be expected, for that 
layer is not known to occm- with the highly cornified type of 
stratum corneum. 
The third layer, the stratum Malpighii^ is three or four cells 
thick. In the more superficial layers the nuclei are scattered, 
occupying the widest part of the long spindle-shaped cells. In 
the deeper layers the cells and nuclei are more crowded, the cells 
of the deepest layer tending to become pavemen1>like in form. 
The thickness of the stratum Malpighii is about equal to that of 
the stratum corneum. 
Turning now to the thickened mass at the introitus vaginae 
(PL 5, Fig. 2), it is seen that here also the stratum corneum'^ is 
of Zander's second type. The peripheral lamellae of this layer 
appear to be more affected by the cochineal than the deeper 
portions, as the steely blue color of the outer part changes 
gradually to bright yellow a Httle before the middle of the 
stratum corneum is reached, and continues so to the base. The 
average thickness of this layer is here about 75 k-, its individual 
lamellae varjang from 3.75 v- to less than one third that thickness. 
The spaces between the lamellae vary in width from barely 
perceptible openings to vacuities about 7 h- in width. The 
lamellae are so irregular in arrangement that it is hard to estimate 
the exact number. There are probably about twenty. 
Below the cornified layer is a well-marked stratum granulosum 
from one to four cells deep. The cells of this layer ajDpear in 
1 Zander ('88) describes the true condition. 
' In the Plate the basal half only of the stratum corneum is shown. 
