Abstract
1. The literature dealing with the reaction of tissues to metals has been briefly reviewed and discussed.
2. It is suggested that the "anodic back EMF" of metals, under the conditions of the experiment, is a measurable electrical quantity which can be correlated with their behaviour in tissues.
3. Details of the method for obtaining this "anodic back EMF" are given.
4. A correlation between the "anodic back EMF" and the loss of weight due to corrosion in vitro has been demonstrated.
5. The inertness of eighty-seven metals has been classified by this method.
6. It must be emphasised that these results are based on in vitro experiments only. In vivo experiments are in progress and the results will be published in due course. Preliminary work suggests that there is some correlation between the ABE and the behaviour of metals in tissue (Hickman 1953).
