1,396 Agriculture 450 Forests and forestry 278 Research 231 Fisheries 161 Horticulture 153 Livestock 147 Agricultural extension work 111 Gardening 109 Veterinary medicine 101 Fruit-culture 98 Periodicals 96 Home economics extension work 82 Economic aspects 71 Poultry 67 Breeding 58 Dairying 56 Statistics 53 Plant diseases 45 Appropriations and expenditures 41 Cattle 40 Fertilizers 37 Bees 36 Societies, etc 36 Swine 33 Agricultural machinery 33 Plants, Protection of 32 Bee culture 32 Soil science 32 Veterinary Medicine 31 Rice