3. Motion of glaciers. (a) Variations: 1. Seasonal. 2. Due to structure of bed. (b) Theories. 4. Peculiar characters of ice. Crevasses: 1. Longitudinal. 2. Transverse and marginal. 4. Radial. 5. Glaciers advance and recede. 8. Moraines. (a) Lateral. (b) Terminal. (c) Median. REFERENCES. Dana, Geology, pp. 674–686. Scott, Geology, pp. 104-116. Tarr, Elementary Physical Geography, pp. 306–327. Mill, Realm of Nature, pp. 253-256. Dryer, Physical Geography, pp. 108–121. LECTURE IV. Volcanoes. 1. Volcanic phenomena in general. 2. Subdivision of the real volcanoes. 3. Stratified volcanoes. 4. Dome-shaped volcanoes. 7. The eruptive act-its premonitions and consequences. 8. Products of an eruption. Dana, Geology, pp. 702-718. Dana, Volcanoes. Judd, Int. Sci. Series. Scott, Geology, pp. 34-60. Tarr, Elementary Physical Geography, pp. 370-382. Mill, Realm of Nature, pp. 218–223. Dryer, Physical Geography, pp. 194–209. LECTURE V. Earthquakes. Relations to volcanic phenomena explained. Why they occur in other than volcanic regions. 1. Nature of the shock. (a) Vibratory. (b) With upward lift. 2. Center of disturbance. 3. Rate of transmission of vibration. 4. Fissures. 5. Origin of earthquakes. (a) A sudden blow. (b) Volcanic outbreak. (c) Cracking of rock under tension. (d) Condensation of steam under pressure. REFERENCES. Dana, Geology, pp. 741-743. Scott, Geology, pp. 61-64. Milne, Int. Sci. Series. Tarr, Elementary Physical Geography, pp. 382-386. Mill, Realm of Nature, pp. 223–226. Dryer, Physical Geography, pp. 190–191. LECTURE VI. Geysers. 1. Cause of this form of spring. Describe Grand Geyser of Iceland as typical geyser. 2. Theories of geyser action: (a) Descloiseaux. (b) Bunsen. 3. Yellowstone National Park. Early accounts. Describe principal geysers. REFERENCES. Dana, Geology, pp. 719-721. Tarr, Elementary Physical Geography, pp. 386-389. Mill, Realm of Nature, p. 238. Dryer, Physical Geography, pp. 106–107. University Extension Lectures Syllabus of a Course of Six Lectures on The Development of Mind or The Psychology of Childhood First Series By Earl Barnes, A. B., M. S. Lecturer for the American Society for the Extension of University Teaching No. 223 Copyright, 1903, by Price, 10 cents The American Society for the Extension of University Teaching |