1. Comment on water pollution in Lake Michigan from pollution aerosol fallout

   • D. Skibin

   OriginalPaper Pages: 405 - 407

2. Test results on buoyant jets injected horizontally in a cross flowing stream

   • George M. Ayoub

   OriginalPaper Pages: 409 - 426

3. Subsonic jet aircraft and stratospheric pollution

   • A. D. Anderson

   OriginalPaper Pages: 427 - 438

4. The effect of arsenic trioxide on the growth of white spruce seedlings

   • R. G. Rosehart
   • J. Y. Lee

   OriginalPaper Pages: 439 - 443

5. Heavy metal deposition in Scandinavia

   • Åke Rühling
   • Germund Tyler

   OriginalPaper Pages: 445 - 455

6. Effects of salt water cooling tower drift on water bodies and soil

   • Amiram Roffman
   • Haia Roffman

   OriginalPaper Pages: 457 - 471

7. The determination of heavy metals in domestic sewage treatment plant wastes

   • J. C. Van Loon
   • J. Lichwa
   • J. Kinrade

   OriginalPaper Pages: 473 - 482

8. Gas production during refuse decomposition

   • G. J. Farquhar
   • F. A. Rovers

   OriginalPaper Pages: 483 - 495

9. Seasonal and spatial changes in primary production and nutrients in Lake Michigan

   • D. C. Rousar

   OriginalPaper Pages: 497 - 514

10. Distribution of phosphates in Lake Mariut, a heavily polluted lake in Egypt

    • Massoud A. H. Saad

    OriginalPaper Pages: 515 - 522

11. Book reviews

    • G. F. Humphrey
    • A. James

    BookReview Pages: 523 - 525

12. Announcement

    Announcement Pages: 526 - 526