General Index 



3665 



time required, 1935, 1970 



yields, 1940 

 Sawlogs 



center of gravity, 1448, 1449 



characteristics, 1931 



cost and value, 2565 



debarking, 1657-1667 



handling and storage, 1623-1625 



insect-caused defects in, percent and 



value loss, 860, 861 



stain, decay, and bacteria in, 841 



weight, 1601,3287 

 Sawmills 



accuracy and board thickness, 1939 



bolters, 1016-1018, 1601, 1970, 2585, 

 2598, 3294, 3310 



chipping headrigs, 1916 



downtime, 1937 



for high-quality hardwoods, 1931 



for short, small hardwoods, 1954 



output, 1927, 1935, 1961 



portable, 1863, 1898, 1907 



sawing time, 1934, 1970 



yields and residues, 1940, 1970, 3290, 

 3326 

 SchoUer-Tomesh process, 3224 

 Sclerenchyma cells, 1078 

 Sclerids, 1078, 1087, 1245 

 Scraping, 1783 

 Screening, 2237 

 Scribner log scale, 3258 

 Secondary cell wall, 239 



distribution of chemical compounds in, 

 378 



illustration of, 300 

 Seeds, 1394 



acorn quality and insect damage, 1407 



anatomy and description, 1394 



as food for wildlife, 1407-1411 



chemical analysis, 1408 



illustrations of , 130-181, 1396, 1400 



interval between seed crops, 1397 



insects that destroy, 856 



moisture content, 1383 



weight per seed, 1397, 1398 



yield per tree and per acre, 1398- 1406, 

 1473, 1481,3320 

 Seed-bearing age, 49-119, 1397 

 Semichemical pulping, 3127 



green-liquor process, 3131 



neutral sulfite, 3129 



non-sulfur, 3132 



trends, 3127 



yields, 3127, 3130 

 Semi-diflfuse porous, definition, 212 

 Shakes, 836 



definition, 907,961,967 

 Shaping, 2012 

 Shaping-lathe headrigs, 1910, 1917, 2207, 



2214 

 Sharpness angle, definition, 1704 

 Shear strength of bark, 1211, 1644-1648 

 Shear strength of wood, 736-738, 740, 769, 

 770, 773 



modes of shear failure, 736-738 

 species-average values, 770 

 Shearing 



delimbing shears, 1803 

 force and power, 1795 

 hydraulic cylinder selection for, 1797 

 spiral-head shears, 1803 

 veneer and panels, 1808, 1809 

 wood damage, 1801 

 Shortwood harvesting system, 1518 



productivity and costs, 1535 

 Shrinking and swelling of 



bark, moisture-related, 1214 

 wood, in non-aqueous liquids, 611 

 wood, moisture-related, 591 

 collapse, 592 

 during kiln drying, 1939, 2396, 



2427 

 during press drying, 2427 

 early wood vs. late wood, 603 

 honeycomb, 593 

 lumber, 3473 



radial vs. tangential shrinkage, 602 

 reconstituted products, 61 1, 2853 

 related to extractives and chemicals, 



602 

 related to moisture content, 594 

 related to restraint, 607 

 related to specific gravity, 600 

 related to temperature history, 608- 



611 

 species values, 595-607 

 tension wood and longitudinal 



shrinkage, 604, 605 

 treatments to inhibit, 612, 2522, 



2710, 2852 

 variation with position in tree, 604- 

 607 

 wood, thermal, 696 

 Sieve plates, 1075 

 Sieve tubes and elements, 1074 

 Silicon carbide abrasive, 2026 

 Skidders 



cable, 1524 

 grapple, 1528 

 light-duty, 1594-1597 

 productivity and costs, 1534 

 Skyline yarding, 1564, 1566-1575, 1580 



