|| Group of 5 rare offprints by Charles Sedgwick Minot. First separate editions. Included are: The Sledge Microtome (1877) reprinted from The American Naturalist, April, 1877 Inscribed presentation copy from the author. Fold marks, chipping to edges; The Concrescence Theory of the Vertebrate Embryo from The American Naturalist July, 1890; The Concrescence Theory of the Vertebrate Embryo, from the American Naturalist, August, 1890; Ueber die Vererbung und Verjungung, Leipzig, Eduard Besold, 1895, ring-stain front cover; The Number Habit from the Proceedings of the American Society for Physchical Research Vol. 1 Part II, June, 1886 (front cover perished, back cover torn and badly chipped. First separate editions. Offprints. Good to very good condition.