398 Forestry Quarterly. 



Silviculture : Nature of light (effect on plant growth) ; evapor- 

 ation from leaves, from grass covered soil and from bare soil; 

 effect of bodies of water, of barren land and of land producing 

 vegetation, on temperature and humidity; radiation of heat, flow 

 of air, and blanketing effect of clouds (both natural and artificial), 

 as applied to protection of forests from wind and frost. 



Lumbering: The steam engine and other prime movers. 



Utilization of Minor Forest Products : Evaporation, fractional 

 distillation (vapor pressure). 



Farm Forestry : Forest growth, soil protection and water sup- 

 ply. 



Zoolog}': The microscope (see under "Wood Technology)." 



Meteorology : Thermometry ; humidity ; flow of air influenced 

 by changes of temperature, of air density and of topography and 

 forest growth ; the barometer, mercury and aneroid, U. S. Gov't 

 form and recording. 



Mechanical Engineering: Laws of machines, work, energy, 

 power, efficiency, friction ; expansion of gases and vapors ; steam, 

 gas and explosive vapor engines; (internal combustion.) 



Botany : Osmosis ; capillarity ; nature of light ; the microscope 

 (see under "Wood Technology)." 



Surveying: Telescope (same points as for microscope) ; the 

 level ; the plumb bob and its eccentricities in mountainous regions ; 

 the vernier ; drainage ; flow of liquids, osmosis. 



Geology : Expansion of freezing and its effect on soils and 

 rocks ; formation and motion of glaciers ; sedimentation ; solu- 

 tion, deposition oi crystals from solution- 

 Mineralogy : Physical properties of crystals, effect of crystals 

 on light and optical determination of crystals. 



Chemistry: Principle and use of the balance; osmosis, elec- 

 trolysis ; batteries, their use, abuse, care, essential parts, and re- 

 newal ; the spectroscope, its principle and construction ; spectros- 

 copic determination of elements, thermometry, pyrometry. 



