1. A soil toxicity test using the nematode Caenorhabditis elegans and an effective method of recovery

   • Steven G. Donkin
   • David B. Dusenbery

   OriginalPaper Pages: 145 - 151

2. Chronic toxicity of the bromoxynil formulation Buctril^® to Daphnia magna exposed continuously and intermittently

   • Kevin J. Buhl
   • Steven J. Hamilton
   • James C. Schmulbach

   OriginalPaper Pages: 152 - 159

3. Fate and effects of the insecticide Dursban^® 4E in indoor Elodea-dominated and macrophyte-free freshwater model ecosystems: III. Aspects of ecosystem functioning

   • T. C. M. Brock
   • J. J. R. M. Vet
   • R. Gijlstra

   OriginalPaper Pages: 160 - 169

4. Perturbation of the aquatic invertebrate community of acidic bog ponds by the insecticide fenitrothion

   • Wayne L. Fairchild
   • Douglas C. Eidt

   OriginalPaper Pages: 170 - 183

5. The carbamate insecticide ZZ-Aphox^® induced structural changes of gills, liver, gall-bladder, heart, and notochord of Rana perezi tadpoles

   • M. Pilar Honrubia
   • M. Paz Herráez
   • Rafael Alvarez

   OriginalPaper Pages: 184 - 191

6. Effects of DDE and food stress on reproduction and body condition of ringed turtle doves

   • James O. Keith
   • Christine A. Mitchell

   OriginalPaper Pages: 192 - 203

7. Effects of 2,4-dichlorophenoxyacetic acid butyl ester on chick liver

   • Ana María Evangelista de Duffard
   • Adriana Fabra de Peretti
   • Ricardo Duffard

   OriginalPaper Pages: 204 - 211

8. Organochlorine concentrations in Laurentian Great Lakes salmonines: Implications for fisheries management

   • Michael A. Miller
   • Natasha M. Kassulke
   • Mark D. Walkowski

   OriginalPaper Pages: 212 - 219

9. Occurrence of pesticides in the Yamaska River, Québec

   • R. J. Maguire
   • R. J. Tkacz

   OriginalPaper Pages: 220 - 226

10. Isomer-specific analysis and toxic evaluation of polychlorinated biphenyls in striped dolphins affected by an epizootic in the western Mediterranean sea

    • Kurunthachalam Kannan
    • Shinsuke Tanabe
    • Ryo Tatsukawa

    OriginalPaper Pages: 227 - 233

11. Accumulation of organic contaminants in sentinel mallards utilizing confined disposal facilities at Hamilton Harbour, Lake Ontario, Canada

    • Martin B. Gebauer
    • D. Vaughn Weseloh

    OriginalPaper Pages: 234 - 243

12. Some effects of cadmium on maize plants

    • Nicoletta Rascio
    • Francesca Dalla Vecchia
    • Rossella Ghisi

    OriginalPaper Pages: 244 - 249

13. A comparison of microbial bioassays for the detection of metal toxicity

    • J. C. Codina
    • A. Pérez-García
    • A. de Vicente

    OriginalPaper Pages: 250 - 254

14. Effect of side-stream cigarette smoke on the hepatic cytochrome P450

    • Toshihiro Kawamoto
    • Masahiro Yoshikawa
    • Yasushi Kodama

    OriginalPaper Pages: 255 - 259

15. Chemically-induced histone modification as a predictor of carcinogenicity

    • Valentine O. Wagner III
    • R. Dean Blevins

    OriginalPaper Pages: 260 - 266

16. Effects of patulin on postimplantation rat embryos

    • Ernest E. Smith
    • Eustace A. Duffus
    • Michele H. Small

    OriginalPaper Pages: 267 - 270

17. Effects of pesticides on isolated rat hepatocytes, mitochondria, and microsomes

    • Tetsuo Yamano
    • Shigeru Morita

    OriginalPaper Pages: 271 - 278

18. Frictional transition of pesticides from protective clothing

    • Yiqi Yang
    • Shiqi Li

    OriginalPaper Pages: 279 - 284

19. Effect of nitrogen limitation on the biodegradability and toxicity of nitro- and aminophenol isomers to methanogenesis

    • Owen A. O'Connor
    • L. Y. Young

    OriginalPaper Pages: 285 - 291

20. Announcements

    Announcement Pages: 292 - 292