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Science, New Series, Vol. 261, No. 5125, Aug. 27, 1993


Previous Issue: New Series, Vol. 261, No. 5124, Aug. 20, 1993
Next Issue: New Series, Vol. 261, No. 5126, Sep. 3, 1993


Front Matter (14 pp.)
Editorial: Three Good Choices, p. 1099
Daniel E. Koshland, Jr.


Letters
Ozone Depletion Theory, pp. 1101-1103
S. Fred Singer; F. Sherwood Rowland
"Critical Fat", pp. 1103-1104
Rose E. Frisch


Corrections and Clarifications: Tropical Deforestation and Habitat Fragmentation in the Amazon: Satellite Data from 1978 to 1988, p. 1104
ScienceScope, p. 1107
Richard Stone


News
Misconduct: Views From the Trenches, pp. 1108-1111
Gary Taubes
Cornell Leads Battle of the B Factories, pp. 1111-1112
Faye Flam
Innovative Techniques on Display at Boston Meeting, pp. 1112-1113
John Travis
Putting Antibodies to Work Inside Cells, p. 1114
John Travis
Predators, Prey, and Natural Disasters Attract Ecologists, pp. 1115-1116
Christine Mlot; Anne Simon Moffat
Frog Venom Cocktail Yields A One-Handed Painkiller, p. 1117
David Bradley


Random Samples, pp. 1118-1119
Richard Stone


Special News Report
Is NIH's Crown Jewel Losing Luster?, pp. 1120-1127
Jon Cohen


Perspective
Probing Stratospheric Ozone, pp. 1128-1129
Jose M. Rodriguez


Reports


Arctic Ozone: AASE II Observations
Chlorine Chemistry on Polar Stratospheric Cloud Particles in the Arctic Winter, pp. 1130-1134
C. R. Webster; R. D. May; D. W. Toohey; L. M. Avallone; J. G. Anderson; P. Newman; L. Lait; M. R. Schoeberl; J. W. Elkins; K. R. Chan
The Seasonal Evolution of Reactive Chlorine in the Northern Hemisphere Stratosphere, pp. 1134-1136
D. W. Toohey; L. M. Avallone; L. R. Lait; P. A. Newman; M. R. Schoeberl; D. W. Fahey; E. L. Woodbridge; J. G. Anderson
Heterogeneous Reaction Probabilities, Solubilities, and the Physical State of Cold Volcanic Aerosols, pp. 1136-1140
O. Toon; E. Browell; B. Gary; L. Lait; J. Livingston; P. Newman; R. Pueschel; P. Russell; M. Schoeberl; G. Toon; W. Traub; F. P. J. Valero; H. Selkirk; J. Jordan
In Situ Observations of Aerosol and Chlorine Monoxide After the 1991 Eruption of Mount Pinatubo: Effect of Reactions on Sulfate Aerosol, pp. 1140-1143
J. C. Wilson; H. H. Jonsson; C. A. Brock; D. W. Toohey; L. M. Avallone; D. Baumgardner; J. E. Dye; L. R. Poole; D. C. Woods; R. J. DeCoursey; M. Osborn; M. C. Pitts; K. K. Kelly; K. R. Chan; G. V. Ferry; M. Loewenstein; J. R. Podolske; A. Weaver
Stratospheric Meteorological Conditions in the Arctic Polar Vortex, 1991 to 1992, pp. 1143-1146
P. Newman; L. R. Lait; M. Schoeberl; E. R. Nash; K. Kelly; D. W. Fahey; R. Nagatani; D. Toohey; L. Avallone; J. Anderson
Chemical Loss of Ozone in the Arctic Polar Vortex in the Winter of 1991-1992, pp. 1146-1149
R. J. Salawitch; S. C. Wofsy; E. W. Gottlieb; L. R. Lait; P. A. Newman; M. R. Schoeberl; M. Loewenstein; J. R. Podolske; S. E. Strahan; M. H. Proffitt; C. R. Webster; R. D. May; D. W. Fahey; D. Baumgardner; J. E. Dye; J. C. Wilson; K. K. Kelly; J. W. Elkins; K. R. Chan; J. G. Anderson
Ozone Loss Inside the Northern Polar Vortex During the 1991-1992 Winter, pp. 1150-1154
M. H. Proffitt; K. Aikin; J. J. Margitan; M. Loewenstein; J. R. Podolske; A. Weaver; K. R. Chan; H. Fast; J. W. Elkins
Ozone and Aerosol Changes During the 1991-1992 Airborne Arctic Stratospheric Expedition, pp. 1155-1158
Edward V. Browell; Carolyn F. Butler; Marta A. Fenn; William B. Grant; Syed Ismail; Mark R. Schoeberl; Owen B. Toon; Max Loewenstein; James R. Podolske

Seismic Determination of Elastic Anisotropy and Mantle Flow, pp. 1159-1162
Jeffrey Park; Yang Yu
Life History Variables Preserved in Dental Cementum Microstructure, pp. 1162-1164
Daniel E. Lieberman
Repair of DNA Methylphosphotriesters Through a Metalloactivated Cysteine Nucleophile, pp. 1164-1167
Lawrence C. Myers; Michael P. Terranova; Ann E. Ferentz; Gerhard Wagner; Gregory L. Verdine
Deletion of the Paired α5(IV) and α6(IV) Collagen Genes in Inherited Smooth Muscle Tumors, pp. 1167-1169
Jing Zhou; Toshio Mochizuki; Hubert Smeets; Corinne Antignac; Pekka Laurila; Anne de Paepe; Karl Tryggvason; Stephen T. Reeders
Identification of a Structural Glycoprotein of an RNA Virus as a Ribonuclease, pp. 1169-1171
Rainer Schneider; Gabriele Unger; Robert Stark; Elisabeth Schneider-Scherzer; Heinz-Jürgen Thiel
Lack of N Regions in Antigen Receptor Variable Region Genes of TdT-Deficient Lymphocytes, pp. 1171-1175
Toshihisa Komori; Ami Okada; Valerie Stewart; Frederick W. Alt
Mice Lacking TdT: Mature Animals with an Immature Lymphocyte Repertoire, pp. 1175-1178
Susan Gilfillan; Andrée Dierich; Marianne Lemeur; Christophe Benoist; Diane Mathis
Genotypic and Phenotypic Characterization of HIV-1 in Patients with Primary Infection, pp. 1179-1181
Tuofu Zhu; Hongmei Mo; Ning Wang; Daniel S. Nam; Yunzhen Cao; Richard A. Koup; David D. Ho
A Receptor for the Malarial Parasite Plasmodium vivax: The Erythrocyte Chemokine Receptor, pp. 1182-1184
Richard Horuk; Chetan E. Chitnis; Walter C. Darbonne; Timothy J. Colby; Anne Rybicki; Terence J. Hadley; Louis H. Miller


Book Reviews
Grand Hopes, p. 1186
Al. The Tumultuous History of the Search for Artificial Intelligence.
Daniel Crevier
Review author[s]: William Sims Bainbridge
Biological Interplays, p. 1187
Darwinism and Social Darwinism in Imperial Germany. The Contribution of the Cell Biologists Oscar Hertwig (1849-1922).
Paul Julian Weindling
Review author[s]: Frederick B. Churchill
Climatic Fluctuations, p. 1188
Weather Cycles. Real or Imaginary?
William James Burroughs
Review author[s]: Richard A. Anthens
Fluorination Methods, pp. 1188-1189
Synthetic Fluorine Chemistry.
George A. Olah; Richard D. Chambers; G. K. Surya Prakash
Review author[s]: William R. Dolbier Jr.
Books Received, p. 1189


Inside AAAS, pp. 1190-1192
Jeffrey Porro

Back Matter (52 pp.)

Previous Issue: New Series, Vol. 261, No. 5124, Aug. 20, 1993
Next Issue: New Series, Vol. 261, No. 5126, Sep. 3, 1993



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