1. Editorial

   • Ian F. G. Hampton

   EditorialNotes Pages: 1 - 1

2. The professional lifetime of Solco W. Tromp — a primary advocate of environmental influences

   • G. Edgar Folk Jr.

   In Memoriam Pages: 3 - 4

3. Estimating ultraviolet radiation at the earth's surface

   • Manuel Nunez
   • Bruce Forgan
   • Colin Roy

   Review Article Pages: 5 - 17

4. Monitoring global change with phenology: The case of the spring green wave

   • Mark D. Schwartz

   Original Article Pages: 18 - 22

5. Flowering plant phenology and weather in Alberta, Canada

   • Elisabeth G. Beaubien
   • Dan L. Johnson

   Original Article Pages: 23 - 27

6. Asphodelus aestivus, an example of synchronization with the climate periodicity

   • John D. Pantis
   • Stefanos P. Sgardelis
   • George P. Stamou

   Original Paper Pages: 28 - 32

7. Aerosol transmission of a viable virus affecting swine: Explanation of an epizootic of pseudorabies

   • Richard H. Grant
   • Alan B. Scheidt
   • Larry R. Rueff

   Original Paper Pages: 33 - 39

8. The effects of two different types of clothing on seasonal cold acclimation of thermophysiological responses

   • Xiuxian Li
   • Hiromi Tokura
   • Tomoko Midorikawa

   Original Article Pages: 40 - 43

9. Effect of yogic exercises on thyroid function in subjects resident at sea level upon exposure to high altitude

   • S. B. Rawal
   • M. V. Singh
   • B. N. Chaudhuri

   Original Article Pages: 44 - 47

10. Changes in body core temperatures and heat balance after an abrupt release of lower body negative pressure in humans

    • Minoru Tanabe
    • Osamu Shido

    Original Article Pages: 48 - 54

11. ISB news

    • Russel J. Reiter

    News Pages: 55 - 55