Article Contentsp. 1243p. 1244p. 1245p. 1246p. 1247p. 1248

Issue Table of ContentsScience, New Series, Vol. 162, No. 3859 (Dec. 13, 1968), pp. 1211-1316Front Matter [pp. 1211-1311]LettersBlend of Teaching and Research [p. 1221]Automobile Engines: Pollution and Power [pp. 1221-1222]Cultura Italiana [pp. 1222-1223]Zond 5: Sketches and Guesses [p. 1223]

Can Success Be the Cause of Failure? [p. 1225]Pleistocene Climates and Chronology in Deep-Sea Sediments [pp. 1227-1234]Current Problems in ResearchClinical and Psychological Effects of Marihuana in Man [pp. 1234-1242]

The Tragedy of the Commons [pp. 1243-1248]Academic Science and the Federal Government [pp. 1249-1251]News and CommentDallas: Larger Education Role Proposed for Research Center [pp. 1251-1254]Nixon Speaks about Scientists [p. 1253]Narcotics and Drug Abuse: The Federal Response [pp. 1254+1256-1258]Nixon Forms Advisory Panels on Science, Space, Health [p. 1255]Laird Choice Indicated [p. 1255]Science Policy Study Group Formed [p. 1256]News in Brief [p. 1257]Ground Broken at Batavia (Weston) [p. 1258]Recent Deaths [p. 1258]

Book ReviewsReview: Developmental Abnormalities [p. 1259]Review: Space Facts and Figures [pp. 1259-1260]Review: Democratizing and Producing [pp. 1260-1261]Review: Radiobiology [p. 1261]Review: The Uses of Insects [pp. 1261-1262]Review: Antiviral Substances [p. 1262]Review: The State University [pp. 1262-1263]Review: Vertebrate Biology [pp. 1263-1264]Review: Planck's Thought [p. 1264]Review: Oxford Doctor [p. 1264]

ReportsFirst Fossil Lamprey: A Record from the Pennsylvanian of Illinois [pp. 1265-1267]Light Scattering in Central Arctic Ocean: Some Winter Profiles [pp. 1267-1268]Mssbauer Investigation of Shocked and Unshocked Iron Meteorites and Fayalite [pp. 1268-1270]Milankovitch Radiation Variations: A Quantitative Evaluation [pp. 1270-1272]Hydrofoils: Optimum Lift-Off Speed for Sailboats [pp. 1273-1275]Mercury's Rotation Period: Photographic Confirmation [pp. 1275-1277]Deficiency of Reduced Nicotinamide-Adenine Dinucleotide Oxidase in Chronic Granulomatous Disease [pp. 1277-1279]Human Osteosarcomas: Immunologic Evidence Suggesting an Associated Infectious Agent [pp. 1279-1281]Human Monocytes: Distinct Receptor Sites for the Third Component of Complement and for Immunoglobulin G [pp. 1281-1283]Zymogen Granules in Enzyme Liberation and Activation in Pea Seeds [pp. 1283-1284]Very-Low-Density Lipoprotein in Intestinal Lymph: Evidence for Presence of the A Protein [pp. 1285-1286]Hemin: An Inhibitor of Erythroid Cell Ribonuclease [p. 1287]Conversion of Mesophilic to Psychrophilic Bacteria [pp. 1288-1289]Dictyostelium discoideum: A Gamma-Ray Resistant Organism [pp. 1289-1290]Morphine Tolerance, Physical Dependence, and Synthesis of Brain 5-Hydroxytryptamine [pp. 1290-1292]Allografts in Genetically Defined Rats: Difference in Survival between Kidney and Skin [pp. 1293-1295]Mice Unilaterally Sensitized for Audiogenic Seizures [p. 1295]Neurons: Secretory Activity during Limb Regeneration and Induction in the Newt [pp. 1296-1297]Alveolar Macrophages: Reduced Number in Rats after Prolonged Inhalation of Lead Sesquioxide [pp. 1297-1299]Operant Controlled Neural Event: Formal and Systematic Approach to Electrical Coding of Behavior in Brain [pp. 1299-1302]Midbrain Single Units Correlating with Pupil Response to Light [pp. 1302-1303]Discrimination Learning as the Summation of Excitation and Inhibition [pp. 1303-1306]Mosaic Unit Ruler [p. 1306]Holoclemensia Instead of Clemensia [p. 1306]

Association AffairsArt and Science: The Analysis and Communication of Biological Form: AAAS Symposium, 30 December 1968, Dallas, Texas [p. 1307]Global Effects of Environmental Pollution: 26-27 December 1968, Dallas, Texas [p. 1308]World Food and Population Crisis: AAAS Symposium, 26-27 December 1968 [pp. 1309-1310]

MeetingsPrairie Rebirth [p. 1312]

Back Matter [pp. 1313-1316]