FORESTRY 233 



57. Applied Forest Mensuration. The scaling of logs, the determin- 

 ing of the volume of other forest products, and the reconnaissance of 

 timbered areas. Complete reconnaissance of a specified area, including 

 the running of primary and secondary base lines, the estimating and map- 

 ping of the timber by types, the making of contour maps, the writing of 

 forest descriptions by watersheds, etc. 



Summer Camp. Prerequisite 32; credit 5. 



58. Field Silviculture. A continuation of 52. Forest types; factors 

 determining each. Type mapping. Natural reproduction of the forest 

 under varying conditions. Improvement cuttings. Marking timber for 

 cutting with reference to the silvicultural systems. 



Summer Camp. Prerequisite 52; credit 3. 



59. Wood Technology. The structural and physical properties of 

 economic woods in the United States and their identification. Detailed 

 structure studied under compound microscope. Identification by physical 

 and structural characteristics with the naked eye and by means of hand 

 lens. Qualities, such as grain, texture, weight, color, hygroscopiscity, etc., 

 as related to specific uses. Seasoning, warping, checking, shrinking, and 

 imperfections in wood, with their causes and effects. 



4th, 6th and 8th Sem. Recitation 1; labs. 2, 3 hr. ; credit 3; fee $2.00. 



60. Woods Used in the Home. The common woods used in the 

 construction of the home. The identification, value, durability, and use of 

 each. Woods used for fine finishing and furniture. Substitutes for valu- 

 able woods and how to detect them. The value of solid, veneered, quar- 

 ter-sawed, and rift sa\ved wood for domestic use. How quartered and 

 flat grain are produced. The defects of wood. The use of cheaper soft 

 woods for interior finish for replacing the expensive hardwoods. For 

 students in Home Economics. 



Lecture 1 hr. ; laboratory 2 hrs. ; credit 1% hrs. 



61. Forest Mapping. A laboratory subject covering the field of for- 

 est mapping. Especial stress laid on topographic mapping and the sym- 

 bols used in National Forest work; type maps, stand maps, reproduction 

 and other maps will be made from field data collected during the preced- 

 ing summer camp. 



5th Sem. Laboratory, field, and office, 3 hrs.; credit 1. 



62. Commercial Woods. An exhaustive study of the more impor- 

 tant native and exotic species found on the markets and consumed in the 

 wood using industries ; the range, occurrence, stand, methods of logging 

 and milling, drying, finishing, and value of the more important species. 

 The physical and mechanical properties, the structure, and the adaptability 

 and use of the more important woods for the various commercial purposes. 



7th Sem. Lectures and recitations 2; credit 2. 



63. Lumber Markets. Wholesaling and retailing of lumber. The 

 wholesale markets; retail markets; exports and imports of lumber and 

 other forest products; supply and demand; lumber prices; lumbermen's 

 associations and other related work. Lectures and assigned readings. 



7th Sem. Prerequisite, For. 54; recitations 3; credit 3. 



