1. New continuous-flow bioassay technique using small crustaceans

   • Alexander J. Novak
   • Duane F. Berry
   • Dora R. May Passino

   OriginalPaper Pages: 253 - 260

2. Effect of suspended sediment on feeding by larval herring (Clupea harengus harengus L.)

   • D. D. Johnston
   • D. J. Wildish

   OriginalPaper Pages: 261 - 267

3. Preparation and characterization of water-soluble fractions of crude and refined oils for use in toxicity studies

   • W. A. Maher

   OriginalPaper Pages: 268 - 272

4. Effects of dispersant and crude oil ingestion on mallard ducklings (Anas platyrhynchos)

   • W. C. Eastin Jr.
   • B. A. Rattner

   OriginalPaper Pages: 273 - 278

5. Impact of blast-furnace plant emissions in a dune ecosystem

   • Els N. G. Joosse
   • L. H. H. Van Vliet

   OriginalPaper Pages: 279 - 284

6. Protective effect of selenium on methylmercury toxicity: A possible mechanism

   • Louis W. Chang
   • Robert Suber

   OriginalPaper Pages: 285 - 289

7. Physiological role of mercury-methylation inClostridium cochlearium T-2C

   • Hidemitsu S. Pan-Hou
   • Nobumasa Imura

   OriginalPaper Pages: 290 - 297

8. Recent increase in mercury sedimentation in a forest lake attributable to peatland drainage

   • Heikki Simola
   • Martin Lodenius

   OriginalPaper Pages: 298 - 305

9. Shifts in caddisfly species composition in Sacramento River invertebrate communities in the presence of heavy metal contamination

   • Eugene F. Zanella

   OriginalPaper Pages: 306 - 312

10. Heavy metal concentrations in shrimp, crab, and sediment obtained from AD-Dammam sewage outfall area

    • Muhammad Sadiq
    • Tahir H. Zaidi
    • Atique A. Mian

    OriginalPaper Pages: 313 - 319

11. Enrichment of copper, zinc, manganese, and iron in five species of pondweeds (Potamogeton spp.)

    • Kai Aulio
    • Matti Salin

    OriginalPaper Pages: 320 - 325

12. Accumulation of the polychlorinated biphenyl aroclor 1242 from contaminated detritus and water by the saltmarsh detritivore,Uca pugnax

    • Andrew C. Marinucci
    • R. Bartha

    OriginalPaper Pages: 326 - 333

13. Time trends of chlordane, DDT, and PCB concentrations in pike (Esox lucius) and Baltic herring (Clupea harengus) in the Turku archipelago, northern Baltic sea for the period 1971–1982

    • Raija Moilanen
    • Heikki Pyysalo
    • Reino Linko

    OriginalPaper Pages: 334 - 340

14. Thyroid responses in rats fed diets formulated with Great Lakes coho salmon

    • John F. Leatherland
    • Ron A. Sonstegard

    OriginalPaper Pages: 341 - 346

15. Comparative studies on the recovery of organochlorine pesticides between dry column chromatography and acetonitrile partitioning

    • Katsuyoshi Kuwabara
    • Kouichiro Maeda
    • Takashi Kashimoto

    OriginalPaper Pages: 347 - 353

16. A study of well water in selected California communities for residues of 1,3-dichloropropene, chloroallyl alcohol and 49 organophosphate or chlorinated hydrocarbon pesticides

    • K. T. Maddy
    • H. R. Fong
    • A. S. Fredrickson

    OriginalPaper Pages: 354 - 359

17. Seasonal brain acetylcholinesterase activity in three species of shorebirds overwintering in Texas

    • Christine A. Mitchell
    • Donald H. White

    OriginalPaper Pages: 360 - 365

18. Stability of matacil^® in aqueous media as measured by changes in anticholinesterase potency

    • I. Vassilieff
    • D. J. Ecobichon

    OriginalPaper Pages: 366 - 370

19. Acute inhalation toxicity of ammonia in mice

    • John C. Kapeghian
    • Harry H. Mincer
    • I.Wade Waters

    OriginalPaper Pages: 371 - 378