The Adsorption of Gelatin to Silver Bromide

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Abstract
Experimental data are presented illustrating a specific case of amphipathic adsorption, namely, of gelatin to silver bromide. In this there is mutual coagulation of the silver hydrosol and protein, followed by peptization in excess of dissolved protein. The phenomena in their relation to the isoelectric point of the protein and the pH of the solution are interpreted in terms of a basically duplex polar: non‐polar structure in proteins, and of a resonance factor, involving both adsorbent and adsorbate, in similar cases.