. The Journal of tropical medicine and hygiene . ll be seen to be notquite normal. If now these figures (17 and 18) are carefullyexamined with a lens, it will be noted that thereis a very marked hyperkeratosis, and that, althoughthere has been some acanthosis, as is evidenced bythe cellular downgrowths into the cutis and by theelongated twisted and subdivided forms of thepapills, still there is no marked general thickeningnf the rete Malpighii, and it will be quite evidentthat there is no trace of either the stratum lucidumor of stratum granulosum. The thinness of therete over the apices of th
. The Journal of tropical medicine and hygiene . ll be seen to be notquite normal. If now these figures (17 and 18) are carefullyexamined with a lens, it will be noted that thereis a very marked hyperkeratosis, and that, althoughthere has been some acanthosis, as is evidenced bythe cellular downgrowths into the cutis and by theelongated twisted and subdivided forms of thepapills, still there is no marked general thickeningnf the rete Malpighii, and it will be quite evidentthat there is no trace of either the stratum lucidumor of stratum granulosum. The thinness of therete over the apices of the papillffi should beespecially noted, also the cone-like condensation ofof the wavy layers of the stratum corneum in theareas corresponding to the original papillas. Further,fig. 17 shows that there is no marked cellularinfiltration into either the papillas, the subpapillarylayer or the corium generally. Fie;. 19 depicts theopening of a hair follicle, and shows how the hyper- THE JOURNAL OF TROPICAL MEDICINE AND HYGIENE. PLATE I. May 15, To illustrate paper, Sudanese Examples of Two Common Hyperkeratoses.—I. Ichthyosis. by Albert J. Chalmers,, , , and Captain Arthde Innes, (T.). THE JOURNAL OF TROPICAL MEDICINE AND HYGIENE. PLATE II. May 15, 1918.
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