1. Distribution of Total Mercury and Methyl Mercury in Water, Sediment, and Fish from South Florida Estuaries

   • K. Kannan
   • R. G. Smith, Jr.
   • J. K. Summers

   Pages: 109 - 118

2. Concentrations of Metals Associated with Mining Waste in Sediments, Biofilm, Benthic Macroinvertebrates, and Fish from the Coeur d'Alene River Basin, Idaho

   • A. M. Farag
   • D. F. Woodward
   • J. S. Meyer

   Pages: 119 - 127

3. Enhanced Heavy Metal Tolerance in Two Strains of Photosynthetic Euglena gracilis by Preexposure to Mercury or Cadmium

   • S. Devars
   • R. Hernández
   • R. Moreno-Sánchez

   Pages: 128 - 135

4. Integrity of Lichen Cell Membranes in Relation to Concentration of Airborne Elements

   • J. Garty
   • N. Kloog
   • Y. Cohen

   Pages: 136 - 144

5. Ecotoxicological Hazard Assessment of Two Polymers of Distinctively Different Molecular Weights

   • K. M. Jop
   • J. R. Allaway
   • P. D. Guiney

   Pages: 145 - 151

6. Comparative Toxicity of Chlordane, Chlorpyrifos, and Aldicarb to Four Aquatic Testing Organisms

   • M. T. Moore
   • D. B. Huggett
   • C. M. Cooper

   Pages: 152 - 157

7. Environmental Assessment of Benthic Impacts Associated with Pulp Mill Discharges. II. Distribution of Sediment EOX in Relation to Environmental Factors

   • P. K. Sibley
   • D. G. Dixon
   • D. R. Barton

   Pages: 158 - 166

8. Tissue-Level Biomarkers in Sentinel Slugs as Cost-Effective Tools to Assess Metal Pollution in Soils

   • I. Marigómez
   • M. Kortabitarte
   • G. B. J. Dussart

   Pages: 167 - 176

9. Effects of Dispersant Treatment on the Acute Aquatic Toxicity of Petroleum Hydrocarbons

   • M. M. Singer
   • S. George
   • M. L. Sowby

   Pages: 177 - 187

10. Preliminary Observations on Responses of Embryonic and Larval Pacific Herring, Clupea pallasi, to Neutral Fraction Biodegradation Products of Weathered Alaska North Slope Oil

    • D. P. Middaugh
    • M. E. Shelton
    • L. A. Courtney

    Pages: 188 - 196

11. Trace Element Concentrations in Two Subpopulations of Lesser Snow Geese from Wrangel Island, Russia

    • A. Hui
    • J. Y. Takekawa
    • K. V. Litvin

    Pages: 197 - 203

12. Pre- and Postnatal Exposure to 3,3′,4,4′-Tetrachlorobiphenyl: I. Effects on Breeding Ability and Sperm Fertilizing Ability in Male Mice

    • A. Huang
    • D. Powell
    • K. Chou

    Pages: 204 - 208

13. Pre- and Postnatal Exposure to 3,3′,4,4′-Tetrachlorobiphenyl: II. Effects on the Reproductive Capacity and Fertilizing Ability of Eggs in Female Mice

    • A. Huang
    • S. Lin
    • K. Chou

    Pages: 209 - 214

14. Announcements

    Pages: 215 - 215