After a brief discussion on the basis of the dilution method for determination of telediastolic volume (TDV) of the ventricles, the authors described the results from their own experimental studies on 8 nonbred dogs, on whom 186 curves of indicator "washing" (of the dye "Cardiogreen" were recorded, presented on 2 tables. The results showed that the measurements should be made by means of the later steps of the curves. TDV and accordingly the relative stroke volume of both ventricles differed slightly. The smaller values, according to the authors, of TDV of the left ventricle in comparison with the right ventricle revealed that the size of the relative stroke voluem depended both on the mechanism of Starling and on the contractility of the ventricles.
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