The microcirculation. Symposium on factors influencing exchange of substances across capillary wall: (Proceedings of the Fifth Conference on Microcirculatory Physiology and Pathology, Buffalo, N. Y., April 1, 1958.) Edited by S.R.M. Reynolds, Chaiman, Fifth Microcirculatory Conference; Professor and Head, Department of Anatomy, University of Illinois College of Medicine; and Benjamin W. Zweifach, Professor of Pathology, New York University-Bellevue Medical Center. Urbana, 1959, University of Illinois Press, 170 pages. Price $4.50