1. ¹⁴C-labeling of the compounds excreted by phytoplankton for employment as a realistic tracer in secondary productivity measurements

   • W. J. Wiebe
   • D. F. Smith

   OriginalPaper Pages: 1 - 8

2. Thiosulfate stimulation of microbial dark assimilation of carbon dioxide in shallow marine waters

   • Jon H. Tuttle
   • Holger W. Jannasch

   OriginalPaper Pages: 9 - 25

3. Ciliates as a food source for marine planktonic copepods

   • S. G. Berk
   • D. C. Brownlee
   • R. R. Colwell

   OriginalPaper Pages: 27 - 40

4. Microbial populations on Douglas fir needle surfaces

   • Mary E. Bernstein
   • George C. Carroll

   OriginalPaper Pages: 41 - 52

5. A computer study of the evolution of aerobic heterotrophic bacterial populations in sewage and river waters

   • Bernard Baleux

   OriginalPaper Pages: 53 - 65

6. Estimation of downwind viable airborne microbes from a wet cooling tower—Including settling

   • Ernest W. Peterson
   • Bruce Lighthart

   OriginalPaper Pages: 67 - 79

7. Microbial populations associated with the surface of the brown algaAscophyllum nodosum

   • A. M. Cundell
   • T. D. Sleeter
   • R. Mitchell

   OriginalPaper Pages: 81 - 91

8. Book review

   • John Tjepkema

   BookReview Pages: 92 - 92