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Of course I have found them as you did, in my own excretions as I was traveling over ague bogs. DR. P.G. UNNA, of Hamburg, has lately been experimenting on the dermato therapeutic uses of a substance called ichthyol, obtained by Herr Rudolph Schroter by the distillation of bituminous substances and treatment with condensed sulphuric acid.
If pus is formed, one or more small incisions are made and a light moist dressing placed over the wounds to absorb the discharge, but no drain is inserted. The whole of the inflamed area should be covered with gauze wrung out of a 1 in 10 solution of ichthyol in glycerine.
This resembles the figure of the Guaperva maxima caudata in Willughby's Ichthyol. There are 2 sorts of porpoises: the one the long-snouted porpoise, as the seamen call it; and this is the dolphin of the Greeks. The other is the bottle-nose porpoise, which is generally thought to be the phaecena of Aristotle. This is the guaracapema of Piso and Marcgrave, by others called the dorado.
There is pain in raising the heel from the ground, and creaking can be felt on palpation. The treatment consists in putting the affected tendon at rest, and with this object a splint may be helpful; the usual remedies for inflammation are indicated: Bier's hyperæmia, lead and opium fomentations, and ichthyol and glycerine.
Those liable to chilblains should take open-air exercise, nourishing food, cod-liver oil, and tonics. Woollen stockings and gloves should be worn in cold weather, and sudden changes of temperature avoided. The symptoms may be relieved by ichthyol ointment, glycerin and belladonna, or a mixture of Venice turpentine, castor oil, and collodion applied on lint which is wrapped round the toe.
When an ulcer becomes acutely inflamed as a result of superadded infection, antiseptic measures are employed to overcome the infection, and ichthyol or other soothing applications may be used to allay the pain.
As with sulphur preparations, he begins with a moderately strong preparation, and as he proceeds reduces the strength of the application. For obstinate eczema of the hands the following formula is given as very efficacious: R. Lithargyri 10.0; coq.c. aceti, 30.0; ad reman. 20.0; adde olei olivar., adipis, aa 10.0; ichthyol 10.0, M. ft. ung.
The symptoms may be relieved by rest and by soothing applications, such as belladonna, ichthyol, or menthol, by the use of hot-air and electric baths, and in obstinate cases by blistering or by the application of Corrigan's button. When such treatment fails the nerve may be stretched, or, in the case of a purely sensory trunk, a portion may be excised.
Over ordinary sulphur preparations it has this advantage, that the sulphur is in very intimate and stable union, so that ichthyol can be united with lead and mercury preparations without decomposition. Ichthyol when rubbed undiluted on the normal skin does not set up dermatitis, yet it is a resolvent, and in a high degree a soother of pain and itching.
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