By means of the improved electrophoretic technique it has been possible to study the association products which are formed when mixed and dissociated hemocyanins from two different species are reassociated. Both the dissociation and the reassociation of the hemocyanins have been produced simply by altering the pH of the solutions. Scale method electrophoretic diagrams have been used throughout this investigation. This method has adequately demonstrated its advantages and has permitted exact calculations of the mobility, concentration, and homogeneity of components which were either present in too small an amount or were too nearly similar electrochemically to have been defined by other methods.

Evidence has been presented which indicates that a number of mixed hemocyanins have been produced. These mixed hemocyanin molecules contain fractions of the dissociated hemocyanins from two different species.

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