INDEX. • '* 25 



Bulle- 



Rio Grande — tin No. Page. 



irrigated lands, description 665 1-3 



lower irrigated district, status of farming, bulletin by Rex E. 



Willard 665 1-24 



Valley, Texas, rail transportation and markets 665 22-23 



Road — 



building, cost keeping 660 13-52 



See also Highway work. 



construction, publications, list 670 30 



Roads — 



building — 



cost keeping 660 13-52 



equipment, rental table 660 50-52 



rock, tests, results 1916 and 1917, bulletin by Prevost Hub- 

 bard and Frank H. Jackson, jr : 660 1-30 



construction terms 660 39-41 



materials, measurements, tables 660 42-46 



operations, time and cost records 660 23-38 



{13 

 i«q_iqO 

 Rock- 

 crushing strength, test, operation 670 1-2 



road-building — 



broken stone, physical tests 670 29 



results of physical tests in 1916 and 1917, bulletin by Pre- 

 vost Hubbard and Frank H. Jackson, jr 670 1-30 



Roosevelt Dam, location, building, capacity, and water rights 654 6-7 



Root crops, shipments by States and by stations, 1916 667J 170 



See also Artichokes; Beets; Carrots; Parsnips; Potatoes; Sweet 

 potatoes; Rutabagas; Turnips. 

 Rot- 

 brown, stringy, trees attacked and characteristics 658 16 



honeycomb, description, trees attacked, characteristics, etc 658 3, 4, 7, 16 



yellow heart, description, trees attacked, and characteristics. . . 658 15, 17, 18 



Rotations, Anderson County, South Carolina 651 32 



Rots, tree, characteristics and trees attacked 658 3-22 



Ruta bagas, shipments by States and by stations, 1916 667 11, 168 



Sacbrood, diagnosis, characteristics, cultures, etc 671 10-11 



{12 

 17S-1S2 

 Salt- 

 Lake Valley, duck sickness, prevalence and history 672 1-5 



River Valley- 

 Arizona, extent, irrigation, climate, etc 654 4-11 



water rights, crops, and markets 645 6-11 



Sampson, Arthur W., and Leon H. Weyl, bulletin on "Range 

 preservation and its relation to erosion control on Western grazing 



lands " 675 1-35 



[3-4, 6, 10, 



Sandstone, tests for roadbuilding, 1916 and 1917 670 11, 15. 22, 



1 24,27,28 

 Sawmills- 

 number operating, 1904-1916. 673 3 



number producing lumber, lath, and shingles, 1916, by States, 



and output of each by kinds 673 38-43 



f 4,5,6-7, 



Schist, tests for road building, 1916 and 1917 670^ 10-11, 



1 20,27-28 

 School studies, corn — 



suggestive correlations 653 18-19 



use and value of special text books and references 653 10 



Schools, rural elementary, lessons on corn, bulletin by C. H. Lane. . 653 1-19 



Score card, corn-judging, studies in schools, exercises, references.. 653 2-3 



