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Human physiology . of the purely mechanical theory to explain VIII THE EXCRETION OF URINK. 457 the formation of urine. Of course this would not suffice todecide between the theory of Bowman and Heidenhain andthat maintained by Sobieranski. Against this last theory, how-ever, we may adduce almost if not quite all the objections madeby Heidenhain to Ludwigs contention. It further seems to usimprobable on the argument by analogy, in view of the fact thatthe epithelial cells in all other tubular glands function as organsof external secretion, although this does not preclude the possi-bility of the
Human physiology . of the purely mechanical theory to explain VIII THE EXCRETION OF URINK. 457 the formation of urine. Of course this would not suffice todecide between the theory of Bowman and Heidenhain andthat maintained by Sobieranski. Against this last theory, how-ever, we may adduce almost if not quite all the objections madeby Heidenhain to Ludwigs contention. It further seems to usimprobable on the argument by analogy, in view of the fact thatthe epithelial cells in all other tubular glands function as organsof external secretion, although this does not preclude the possi-bility of their simultaneously affecting the constitution of theblood, by an outpour into the lymph of other special products ofan internal secretion. But this view, which was held by Brown-Sequard, Frankel, Meyer and others is far from proved, since boththe experimental facts and the clinical data on which it isfounded lend themselves to quite another interpretation. Among the later histological researches into the activity of. i:
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysiology, bookyear1