RT Journal T1 THe colloid chemistry of protoplasm. JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1929 FD April 27 VO 92 IS 17 SP 1473 OP 1474 DO 10.1001/jama.1929.02700430075037 UL http://dx.doi.org/10.1001/jama.1929.02700430075037 AB This is the first of a series of protoplasm monographs sponsored by the editors of the journal Protoplasma. The present monograph is written in English, is printed on good paper, and is practically free from typographic error. The author uses μμ instead of the correct mμ as a symbol for millimicron. Probably it is permissible to classify monographs into two great groups. A monograph sometimes represents a compilation and summation of all of the important literature in a given field by an author who presents all angles of a given question in a more or less impartial manner and leaves the reader to judge for himself the relative merits of the various views that have been presented. The other type of monograph is that which is devoted throughout to an exposition and defense of the views of the author. The present volume is of the second type. It is not