540 INDEX. 



Butter Page. 



coloring, research studies 121 



inspection 



for Navy 95-96 



service, Markets Bureau 452 



renovated, factory inspection 96 



By-products 



citrus, studies by Chemistry Bureau 223-224 



creamery, utilization , 99 



kelp manufacture, value 243-245 



Cabbage, insects injurious 257 



Cadmium, substitute for tin, investigation 227 



Calcium 



arsenate, boll-weevil control 267-268, 500 



arsenate, preparation and distribution to farmers 500, 502 



Calf clubs, organization. Southern States 82 



California 



bulb growing, experiments 149 



citrus insects, investigations 260-261 



cotton growing . 152 



fruit growing, experiments 141-144, 145 



rice, damages by wild fowl 286-287 



road projects approved, 1917, 1918, 1919 401, 403, 405, 407 



Calorimeter, respiration, studies 389 



Camphor growing, development of industry 160 



Cane, sugar 



destruction by rodents 281 



moth borer, control 268 



mottling disease 174 



Canning, waste products, utilization 160 



Caprifigs, varieties, introduction and use in Smyrna fig culture 144-145 



Capsaicin, examination 228 



Carbon bisulphid, use in bots control 131, 503 



Carbon, bleaching, by-product of kelp industry 243, 244 



Cars 



heating, use in shipping perishables 439 



refrigerator, use in shipping perishables 439 



Cataloguing, work of Library, 1919 340 



Cattle 



accredited-herd lists, plan 77, 93, 117 



dairy, breeding experiments, Beltsville, Md 101 



drought-stricken, saving by shipment to other sections 79 



feeding experiments, 1919 80-81, 82, 100 



grazing, national forests, numbers, by States 192 



import, tuberculin tests 109 



shipments 



for France and Belgium, 1919 110 



from quarantined areas 115 



slaughtered for tuberculosis, and indemnity paid 74, 76, 117 



testing for tuberculosis 74, 76, 116 



Celery leaftier, control, by spraying, cost 257 



Central America, soil studies, 1919. 239 



Cereal crops, insects injurious, investigations 247-249 



Cereals, studies by Chemistry Bureau 225-226 



Chalcis, alfalfa-seed, control 249 



Charcoal, by-product of kelp industry, value 242, 243 



Chayote, growing, seed distribution 159 



Cheese 



making, extension and increase of factories 95, 99 



tuberculosis infection, tests 135 



Chemical investigations. Soils Bureau, 1919 239-240 



Chemist, report, 1919 211-234 



Chemistry 

 Bureau 



report of chief, 1919 211-234 



work for other bureaus and departments 212, 219, 221, 222, 228, 233-234 



library, work, 1919 347, 349 



plant studies 228 



