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bf events ?Why does the cardiac patient pass into a dying state with a resting minute volume of circulation the same as that of an upright soldier ?The realization of ignorance brings its gleam of hope that continued research will add to our therapeutic power: cardiac surgery and new technical developments in investi- gation are adding daily to our knowledge and extending our experience in depth.In time some of the pictures crudely sketched in these lectures will be more clearly perceived, and be submitted once again to a much more rational and complete interpretation than we can give to-day.(Figs. 5, 6, and 7 are reproduced from Acta Medica Scandi-
Bach et al. (1952) studied this question.