INDEX. 651 



Cro]>s— Page- 

 farm, production costs, studies 549-553 



field work of Plant Industry Bureau 163-173 



statistics — 



acreage, exports, and production, 1910-1922 53-57 



boys' and girls' clubs 448 



work, 1922 529 



Cucumber — 



mosaic investigations 186 



striped-beetle control 316 



Cuprammonium, use in waterproofing 267 



Currants — ■ 



eradication for control of blister rust 190, 191 



quarantine orders 625, 626 



Cyanamide — 



calcium, derivatives utilization 641 



plant. Muscle Shoals, Ala. , capacity and work 634 



process for nitrogen fixation 637-638 



Cyanide, process for nitrogen fixation 639 



C}Tnene, source of dyes and other chemicals 273, 274 



Dairies, management 118 



Dairy — 



buildings construction and equipment 124 



cows, breeding in Alaska 427 



Division, report of work 113-125 



exhibits by Department, 1922 629 



experiment farm, Beltsville, Md. , investigations 122-123 



farms, representative, farm income, etc 653 



industry. Western States 117 



introduction, extension work 449-450 



products — 



marketing work, 1922 517-519 



utilization 115 



research laboratories, work 120 



sanitation 118 



Show, National, Department exhibits 631 



statistics, preparation 124 



Dasheens, introduction and gro\ving 185 



Date- 

 palms, quarantine order 625 



scale, eradication progress 610-611 



Dates, growing, progress ^ 181 



Deer, destruction by preda.tory animals 336-337 



Delphinium spp. seeds, insecticidal value ... 599 



Demonstration, home, work, report 439, 445-447 



Demonstrations- 

 beekeeping, cooperative work 329 



cotton marketing 523-524 



extension work photography 416 



reclamation projects 194 



work of county agents 441-444 



Denver, pathological laboratory, work 149 



Dicentra spp., toxic properties 169 



Dichlorobenzene, use in timber preservation 324 



Dicyanine, making, patent process 274 



Digestion, experiments, Home Economics Office 457 



Diphtheria, antitoxin in blood of horses 146 



Dipping, cattle, for ticks, progress of work 100, 137 



Dips, animal, investigations 153 



Director of Extension Work, recommendation 36 



Disbureements DiAdsion, report of Chief 371-376 



Diseases — 

 animal — 



exclusion by quarantine 101, 133-134 



research work 144-147 



causes of condemnation of meat animals 1 26 



