JDH writes to Sir William Thiselton-Dyer [WTTD] about his continued poor health. He is suffering with a bad skin complaint; 'phlegmasia', & describes his symptoms & the treatments used. He mentions reports written by [Dr. Philip Henry] Pye-Smith a skin specialist, in relation to the health of [George] Nicholson. Also mentions a letter he has received from [Otto] Stapf & a theory WTTD has about skin afflictions following a certain other, unspecified disease. JDH sympathises with WTTD's recurrent evening 'febrile attacks'.