This volume contains a few brief paragraphs of tribute as a token of respect and appreciation to the memory of Dennis Robert Hoagland. Professor Hoagland died Sept. 5, 1949. He had served on the editorial committee and board of directors of the Review from the inception of the series.
The topics reviewed in this volume include biologic oxidations; proteolytic enzymes; nonoxidative, nonproteolytic enzymes; chemistry and metabolism of carbohydrates, lipids, amino acids and proteins, and steroid hormones; nucleic acids, purines and pyridines; chemistry of hormones; soluble vitamins; nutrition; muscle; biochemistry of neoplastic tissue; chemical composition of blood plasma and serum; pyrolle pigments; immunochemistry; biochemistry of antibiotics, and partition chromatography. These topics are reviewed by such workers as G. Pincus, A. White, F. B. Straub, C. Carruthers, R. Lemberg and H. E. Carter, among a long list of experts. The presentation, style, format and binding are again at the high level that