48 INDEX TO YEARBOOKS, 1901-1905. 



Dogs, infestation witli thread worms, 1905, 155, 156. 

 prairie. See Prairie dogs, 

 relation to spread of tapeworms, 1905, 157-160. 

 Domestic animals, diseases, legislation, 1904, 581. 



Dormant period in plants, relation to health and growth, notes, 1901, 172-173. 

 Douglas spruce bark weevil, injuries in forest reproduction, 1905, 253. 



seed destruction by chalcis fly, 1905, 250. 

 Doves, usefulness, note, 1904, 514. 



Downing grape, history, description, and features recommending, 1901, 388. 

 Draft horse, heavy, profit of breeding and essentials in selection, 1902, 457-461. 

 Drain tile, stoneware, value and use in irrigated lands, 1902, 241. 

 Drainage, adaptation of size and location of drains to contour of land, 1902, 233. 

 and irrigation, Porto Rico experiments, 1904, 102. 



plowing, preparation for corn planting, 1903, 184. 

 difficulty for water from underground source, 1902, 242. 

 directions for tree seed storage, 1905, 186. 

 imperfect, cause of failure with sand-clay roads, 1903, 260. 

 importance in road building, 1904, 331. 

 in peach orchard, note, 1902, 608. 

 increase of farm-land prices in Illinois, 1905, 524. 



investigations, discussions, 1902, 77; 1903, 95; 1904, 106-112; 1905, 118-120. 

 in connection with soil studies, 1901, 49. 

 review by Elwood Mead, 1904, 615-616. 

 for alkali lauds'in California, note, 1902, 51. 

 irrigated lands, discussion, 1902, 234-242. 

 lack, cause of alkali conditions, remarks, 1902, 236. 

 necessity for proper granulation of soil, note, 1903, 168. 

 in California irrigated lands, 1901, 45. 

 connection with irrigation, 1901, 87. 

 new field for investigation, remarks, 1902, 243. 

 of rainfall, discussion, 1902, 232. 

 or seepage streams, value and right of use, 1902, 239. 

 plan for field near Greeley, Colo., 1902, 240. 

 Porto Rico experiments, 1904, 102. 

 reclamation of alkali soil, value, 1902, 237, 244. 

 waste lands, remarks, 1902, 231. 

 relation to corn seed patch, 1902, 548. 

 removal of alkali in irrigated lands, 1902, 237. 

 review by Elwood Mead, 1904, 612-618. 



some engineering features, article by C. G. Elliott, 1902, 231-244. 

 surveys in irrigated sections, discussion, 1902, 110-111. 

 use in adapting soil to fruit growing, 1901, 436. 

 value for reclamation of alkali soil, 1902, 244. 



in irrigation and in humid regions, remarks, 1903, 95. 

 water carried off and salt removed in reclamation, 1903, 64. 

 Drains, kinds lor use in irrigated lands, remarks, 1902, 239. 

 operation and location, 1902, 241. 



practical difficulties in construction in irrigated lands, 1902, 238. 

 time for location, 1902, 242. 

 Drake, Sir Francis, description of weather in California in 1579, 1902, 204. 

 Dress goods, use of mohair in manufacture, 1901, 283. 

 Dried fruit, freedom from San Jose scale, 1905, 79. 

 Drilled corn as compared to corn in hills, 1903, 187. 

 Drinking water, cause of bad odors and tastes, note, 1902, 178. 

 conclusions as to analysis, remarks, 1902, 286. 

 Drinks, importers, note, 1904, 40. 

 Drives and walks, making, in home adornment, 1902, 509. 



relation to planting for home adornment, 1902, 504. 

 Drosophila, danger of spread of typhoid fever, 1901, 189. 

 Drought and heat, serious injury, 1901, 651. 



low temperatures, with damage to fruit, 1903, 529. 

 effect on Mexican cotton boll weevil, 1901, 375. 



plant cells, note, 1901, 163. 

 in India, relation to rainfall, 1902, 631. 

 New England, remarks, 1903, 531, 532, 533. 

 relief by irrigation, study, 1903, 96, 97. 



