Table of Contents

• Saul G. Cohen,
• Vishnu M. Vaidya,
• and Richard M. Schultz

Active Site of α-Chymotrypsin Activation by Association-Desolvation

• D. M. Burland
• and G. W. Robinson

Is the Breakdown of the Born-Oppenheimer Approximation Responsible for Internal Conversion in Large Molecules?

• André Avez

Characteristic Classes and Weyl Tensor: Applications to General Relativity

• J. A. Donaldson

A Singular Abstract Cauchy Problem

• Witold M. Bogdanowicz

Theory of a Class of Locally Convex Vector Lattices Which Include the Lebesgue Spaces

• S. J. Czyzak,
• T. K. Krueger,
• and L. H. Aller

Excitation of Metastable Levels in Low Density Nebular Plasmas: [SII] and [ArIV]

• David S. Segal
• and Arnold J. Mandell

Behavioral Activation of Rats during Intraventricular Infusion of Norepinephrine

• J. C. Eccles

Neurogenesis and Morphogenesis in the Cerebellar Cortex

• Kunihiko Suzuki
• and Yoshiyuki Suzuki

Globoid Cell Leucodystrophy (Krabbe's Disease): Deficiency of Galactocerebroside β-Galactosidase

• Richard B. Roberts,
• Josefa B. Flexner,
• and Louis B. Flexner

Some Evidence for the Involvement of Adrenergic Sites in the Memory Trace

• H. F. Harlow,
• K. A. Schiltz,
• A. J. Blomquist,
• and C. I. Thompson

Effects of Combined Frontal and Temporal Lesions on Learned Behaviors in Rhesus Monkeys

• H. Hanafusa,
• T. Miyamoto,
• and T. Hanafusa

A Cell-Associated Factor Essential for Formation of an Infectious Form of Rous Sarcoma Virus

• Leonard Ellman,
• Ira Green,
• William J. Martin,
• and Baruj Benacerraf

Linkage between the Poly-L-Lysine Gene and the Locus Controlling the Major Histocompatibility Antigens in Strain 2 Guinea Pigs

• M. A. Baluda
• and D. P. Nayak

DNA Complementary to Viral RNA in Leukemic Cells Induced by Avian Myeloblastosis Virus

• A. C. Wang,
• S. K. Wilson,
• J. E. Hopper,
• H. H. Fudenberg,
• and A. Nisonoff

Evidence for Control of Synthesis of the Variable Regions of the Heavy Chains of Immunoglobulins G and M by the Same Gene

• J. Watson,
• P. Ralph,
• S. Sarkar,
• and Melvin Cohn

Leukemia Viruses Associated with Mouse Myeloma Cells

• Leland H. Hartwell,
• Joseph Culotti,
• and Brian Reid

Genetic Control of the Cell-Division Cycle in Yeast, I. Detection of Mutants

• Brian S. Spooner
• and Norman K. Wessels

Effects of Cytochalasin B upon Microfilaments Involved in Morphogenesis of Salivary Epithelium

• C. B. Ward,
• M. W. Hane,
• and D. A. Glaser

Synchronous Reinitiation of Chromosome Replication in E. coli B/r after Nalidixic Acid Treatment

• Harold W. Kerster
• and Donald A. Levin

Temporal Phenotypic Heterogeneity as a Substrate for Selection

• L. H. Thompson,
• R. Mankovitz,
• R. M. Baker,
• J. E. Till,
• L. Siminovitch,
• and G. F. Whitmore

Isolation of Temperature-Sensitive Mutants of L-Cells

• Hiroto Akiyoshi
• and Nobuto Yamamoto

Genetic Evolution of Bacteriophage, II. Physical Length of the Homologous Region in a Hybrid between Serologically and Morphologically Unrelated Phages

• Thomas D. Gelehrter
• and Gordon M. Tomkins

Posttranscriptional Control of Tyrosine Aminotransferase Synthesis by Insulin

• W. J. George,
• J. B. Polson,
• A. G. O'Toole,
• and N. D. Goldberg

Elevation of Guanosine 3′,5′-Cyclic Phosphate in Rat Heart after Perfusion with Acetylcholine

• Roy H. Doi,
• Lyle R. Brown,
• Gregory Rodgers,
• and Yao-pi Hsu

Bacillus subtilis Mutant Altered in Spore Morphology and in RNA Polymerase Activity

• Gary N. Trump
• and S. J. Singer

Electrophoretically Homogeneous Anti-DNP Antibodies with Restricted Isoelectric Points Elicited in Mice by Immunization with the Antigen Papain-S-DNPL

• Monique Laurent
• and M. Steinert

Electron Microscopy of Kinetoplastic DNA from Trypanosoma mega

• B. Lisowska-Bernstein,
• M. E. Lamm,
• and P. Vassalli

Synthesis of Immunoglobulin Heavy and Light Chains by the Free Ribosomes of a Mouse Plasma Cell Tumor

• Benjamin F. Trump,
• Sue M. Duttera,
• William L. Byrne,
• and Antti U. Arstila

Membrane Structure: Lipid-Protein Interactions in Microsomal Membranes

• Henry Eyring
• and Betsy J. Stover

The Dynamics of Life, II. The Steady-State Theory of Mutation Rates

• Dan R. Storm
• and D. E. Koshland, Jr.

A Source for the Special Catalytic Power of Enzymes: Orbital Steering

• Perry B. Molinoff,
• Steven Brimijoin,
• Richard Weinshilboum,
• and Julius Axelrod

Neurally Mediated Increase in Dopamine-β-Hydroxylase Activity

• María T. Téllez-Iñón
• and Héctor N. Torres

Interconvertible Forms of Glycogen Phosphorylase in Neurospora crassa

• Ariaki Nagayama
• and Samuel Dales

Rapid Purification and the Immunological Specificity of Mammalian Microtubular Paracrystals Possessing an ATPase Activity

• Renné Chen
• and Russell F. Doolittle

Isolation, Characterization, and Location of a Donor-Acceptor Unit from Cross-Linked Fibrin

• Michael Emmer,
• Benoit deCrombrugghe,
• Ira Pastan,
• and Robert Perlman

Cyclic AMP Receptor Protein of E. coli: Its Role in the Synthesis of Inducible Enzymes

• Dezider Grunberger,
• James H. Nelson,
• Charles R. Cantor,
• and I. Bernard Weinstein

Coding and Conformational Properties of Oligonucleotides Modified with the Carcinogen N -2-Acetylaminofluorene

• Albert Dorfman
• and Pei-Lee Ho

Synthesis of Acid Mucopolysaccharides by Glial Tumor Cells in Tissue Culture

• W. Bruce Rowe
• and Alton Meister

Identification of L-Methionine- S -Sulfoximine as the Convulsant Isomer of Methionine Sulfoximine

• LaDonne H. Schulman

Structure and Function of E. coli Formylmethionyl tRNA, I. Effect of Modification of Pyrimidine Residues on Aminoacyl Synthetase Recognition

• W. A. Scott
• and E. L. Tatum

Glucose-6-Phosphate Dehydrogenase and Neurospora Morphology

• Tokutaro Hishizawa,
• James L. Lessard,
• and Sidney Pestka

Studies on the Formation of Transfer Ribonucleic Acid-Ribosome Complexes, XII. Phenylalanyl-Oligonucleotide Binding to E. coli Ribosomes: Necessity for a Free Amino Group

• Ralph Nelson,
• J. Kim deRiel,
• and Allen Kropf

13-Desmethyl Rhodopsin and 13-Desmethyl Isorhodopsin: Visual Pigment Analogues

• A. M. Kapuler
• and S. Spiegelman

Qβ-Replicase and E. coli Transcriptase: Requirements for Substrate Selection as Revealed by a Study of Base Analogs

• H. Tamir
• and P. R. Srinivasan

Studies of the Mechanism of Anthranilate Synthase Reaction

• John Paul Comstock
• and Sidney Udenfriend

Effect of Lactate on Collagen Proline Hydroxylase Activity in Cultured L-929 Fibroblasts

• William D. Terry
• and Jack Ohms

Implications of Heavy Chain Disease Protein Sequences for Multiple Gene Theories of Immunoglobulin Synthesis

• Filiberto Cimino,
• Wayne B. Anderson,
• and E. R. Stadtman

Ability of Nonenzymic Nitration or Acetylation of E. coli Glutamine Synthetase to Produce Effects Analogous to Enzymic Adenylylation

• David Baltimore,
• Alice S. Huang,
• and Martha Stampfer

Ribonucleic Acid Synthesis of Vesicular Stomatitis Virus, II. An RNA Polymerase in the Virion

TRANS-SPECIES RESCUE OF DEFECTIVE GENOMES OF MURINE SARCOMA VIRUS FROM HAMSTER TUMOR CELLS WITH HELPER FELINE LEUKEMIA VIRUS

TOPOLOGICAL RELATIONSHIP OF PROPHAGE λ TO THE BACTERIAL CHROMOSOME IN LYSOGENIC CELLS