Cycle Listings

A Partial Listing of Various Phenomena in Which Rhythmic Cycles Have Been Discovered... Some links have been included to provide a few examples
NATURAL SCIENCE ASTRONOMY AND ASTROPHYSICS Auroras, comets, meteor showers Planets, satellites, asteroids Rotation of galaxies Sunspots and other solar phenomena Variable stars BIOLOGY Bacteriology Abundance and activity of bacteria in human beings BOTANY Abundance of crops, plants, seeds, and algae Assimilation and photosynthesis Concentration of growth substances Electrical conductivity of sap Electrical excitability of mimosa Electrical potential of trees Fiber and individual organ growth Nectar production and sugar content Photoperiodicity Thickness of tree rings ENTOMOLOGY Abundance and activity of insects Feeding, hatching, and migration Pigment changes of certain insects HERPETOLOGY Abundance of snakes and amphibians Activity of lizards and salamanders Pigment changes in salamanders ICHTHYOLOGY & LIMNOLOGY Abundance of algae, plankton, and fish Egg cycle of various fish Migrations INVERTEBRATE ZOOLOGY Abundance of various invertebrates Body temperature and metabolic rate Contraction waves in worms Germ cell maturation Light production and photic responses Migration of various invertebrates Surface color and pigment changes MAMMALOGY Abundance and activity of various mammals Fur production Physical cycles and activity-rest periods Variations in milk production	ORNITHOLOGY Abundance of various birds Metabolic  activity Migration Wing beats of various birds CLIMATOLOGY Air movements and wind direction Barometric pressure and temperature Glacial movements Ozone content of the atmosphere Precipitation, including abnormalities Storm tracts GEOLOGY Earthquakes, geysers, volcanic eruptions Encrustations of archaeological artifacts Geologic epochs and periods Sedimentary deposits, varves, seiches Soil erosion Thickness of rock strata GEOPHYSICS (also see Climatology) Radio propagation quality Terrestrial magnetism HYDROLOGY AND HYDROGRAPHICS Lake, river, and sea levels Ocean currents, temperature, and waves River flow and run-off Tides MEDICINE Abundance of disease organisms & parasitic worms Births and mortalities Blood pressure and blood-sugar content Body temperature and metabolism Electrical skin resistance Emotions and mental activity Endocrine and glandular secretions Epidemics and pandemics Fevers and after-shock Incidence of diseases and disorders Muscular, nervous, and sexual activity Plasma chemistry variations Psychiatric abnormalities Respiration and visceral activities Teeth sensitivity Veterinary diseases	PHYSICS Activity of electrons and molecular vibrations Electromagnetic waves and flux Radio and sound waves SOCIAL SCIENCE ECONOMICS Advertising efficiency Agricultural production Building and real estate activity Commodity prices Financial data General business activity Imports, exports, trade activity Production, consumption, sales Purchasing power Transportation Wage earner activity SOCIOLOGY Civil and international war battles Creativity and inventiveness Crime Cultures and civilizations Fashion Human ability, excitability, output Insanity Intellectual interest Liberalism versus conservatism Marriages and births Military-political activity Periods of emotional excitement Population Religious and scientific activity Strikes and unemployment

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