1. It had been shown in previous papers that when a collodion membrane has been treated with a protein the membrane assumes a positive charge when the hydrogen ion concentration of the solution with which it is in contact exceeds a certain limit. It is pointed out in this paper that by treating the collodion membrane with a protein (e.g. oxyhemoglobin) a thin film of protein adheres to the memb...

Findings are described which amplify those of a preceding paper in showing that bacteria increased in volume when treated with specific agglutinin. When the increase in volume approximated 20 per cent all the bacteria were agglutinated. We have attempted to correlate the volumetric increase with the quantity of protein adsorbed by the organisms during agglutination and have studied not only bac...

From experiments on such membranes as apple skin, parchment paper membrane, and a membrane of completely dry collodion, results have been obtained which could be interpreted by the assumption that these membranes are less permeable for anions than for cations. In parchment paper there is only a relative diminution of the mobility of the anions, in the apple skin and in the dry collodion membran...

Most of the previous treatment methods for auricular haematoma are inconvenient for both patients and doctors because they are time-consuming and complex and must be performed under sterile conditions. The purpose of this study was to evaluate the effectiveness of a simple compressive method using a dental (silicone) impression material and comparing it with other methods for treatment of auric...

The classical investigations of Michaelis and collaborators 1 on the dried collodion membrane as well as the work of other investigators have revealed the basic physicochemical properties of membranes of porous character which are selectively cation-permeable. Dried collodion membranes prepared from suitable collodion ~-4 were found to allow the cations of uni-univalent strong inorganic electro...

DEAR EDITOR, The dramatic presentation of a collodion baby is most commonly associated with a diagnosis of autosomal recessive ichthyosis (ARCI). We investigated a family wherein the father and all four children were collodion at birth, implying an autosomal dominant inheritance pattern. Postnatally, the affected individuals presented with variable degrees of generalized ichthyosis and palmopla...