INDEX. 



13 



Irrigation — Continued. Bulle- 



requirements — tin No - Page. 



of differen t crops 339 20-43 



of soils, variations 339 19-20 



seasons for different crops 339 40 



waste of water, investigations 339 35-39 



water — 



in Idaho, experiments on economical use, bulletin by Don 



H. Bark 339 1-58 



measmement on farms and under canal systems 339 43-46 



Ives grape — 



analysis at different dates during ripening 335 11-12 



sugar and acid content, changes in ripening 335 16, 19 



Ixobrychus exilis exilis, occurrence in Porto Rico, habits and food... 326 26-27 



Jacana, Mexican , occurrence in Porto Rico, note 326 38 



Jacana spinosa, occurrence in Porto Rico, note 326 38 



Jack pine — 



f 43-44 110- 



pulp, experiments and tests 343< ,-,!. -.on 



region of production, map 343 48 



Jackson, Frank H., Jr., bulletin on "Methods for the determina- 

 tion of the physical properties of road-building rock " 347 1-28 



Jelly, cherry, directions for making 350 23 



Jobbins-Pomeroy, Arthur W., bulletin on "Notes on five North 



American buffalo gnats of the genus Similium " 329 1^8 



Kafir, specific gravity, comparison with wheat 328 3 



Kearney, T. H., and others, bulletin on "Community production 



of Egyptian cotton in the United States"...., 332 1-30 



Killdeer, Antillean, occurrence in Porto Rico, variant names, habits, 



and food 326 39-40 



Kingbirds, occurrence in Porto Rico, variant names, habits, and 



food 326 75-78 



Kingfisher, belted, occurrence in Porto Rico, variant names, habits, 



and food 326 66-67 



Kinghead — 



analysis 328 21 



milling yields 328 10 



occurrence in wheat and effect on milled product 328 7-8, 16 



specific gravity, comparison with wheat 328 3 



Koster blue spruce, ornamental value, notes 327 15-16 



Labor — 



cotton picking, management, in Salt River Valley, wages, etc. . 332 



distribution of productive work units, relation to size of farm. . . 341 

 income — 



relation to crop area and crop returns 341 



relation to renting method, Yazoo-Mississippi Delta 337 



tenant farm, relation to type of farm and tenancy, Chester 



County, Pa 341 



tenant, relation to profits of landlord, Yazoo-Mississippi 



Delta 337 



use of term in farm business 341 



number of days, relation to income, Chester County, Pa 341 



Laboratory, road-material testing, equipment 347 



Labor-saving equipment, use, relation to size of farm, Chester County, 



Pa 341 



Lcchnosterna sp. , bird enemies in Porto Rico 326 



Land, waste, Idaho, survey 339 



Landlord, profits — 



and tenant-labor income, relation to cotton acreage and yield, 



Yazoo-Mississippi Delta 337 



relation to labor income, Yazoo-Mississippi Delta 337 



Larch pulp, experiments and tests 343< 



16-17 

 67-68 



30-53 

 10-12 



71-72 



12-13 



25 



63-64 



26-27 



64-65 



11 



53-55 



13-18 



12-13 



41, 



105, 143 



