14 DEPARTMENT OF AGRICULTURE BULS. 826-850. 



Bulletin 



No. Page. 



Rents, contracts in wheat belt, bulletin by E. A. Boeger 850 1-15 



Reservoirs, spillways, and for canals, bulletin by A. T. Mitchelson. . 831 1-40 



Rhizobius, discussion of genus 826 88 



Rhizopus nigricans, control of berries for shipment, notes 830 1-2 



r 6-n, u, 



Rhode Island, lumber production, 1918, by mills and by woods. . . 845< 16, 28, 



I 42-47 



Rhus, galls, aphids forming, note 826 73 



Roguing, sugar cane, to eliminate mosaic disease 829 21-22 



Rohwer, S. A., statement on Cephus pgymaeus 841 27 



Rothgeb, Benton E., and John B. Sieglinger, bulletin on 



"Broom-corn experiments at Woodward, Oklahoma" 836 1-53 



Runner, G. A., and H. G. Ingerson, bulletin on '"Control of the 



grape-berry moth in Northern Ohio " 837 1-26 



Russia, loss from black grain-stem sawfly 834 12 



Rye- 

 growing for temporary pasture in South 827 29 



injury by western grass-stem sawfly 841 3-8 



Saltusaphidina, genera, description and key 826 6, 30-31 



Sando, Charles E., and Lon A. Hawkins, bulletin on "Effect 

 of temperature on the resistance to wounding of certain small 



fruits and cherries '' 830 1-6 



Sanford. H. L., and C. A. Weigel, bulletin on "Chrysanthemum 



midge " . 833 1-23 



Saperda Candida. See Borer, apple-tree. 

 Sawfly — 



black grain-stem — 



control measures, suggestions 834 12-13 



discovery in America, historical notes 834 2-3 



distribution 834 3-5 



food plants, Europe and America 834 5-7 



injury to crops, extent and character 834 11-12 



occurrence, historical notes 834 2-3 



occurence in Maryland, identification, history, etc 834 2-3 



of Europe, in United States, bulletin by A. B. Gahan 834 1-18 



occurence in New Jersey, description, etc 834 2 



western grass-stem — 



bulletin by C. N. Ainslie 841 1-27 



control by burning stubble, straw, etc 841 24-25 



history, distribution, injuries, etc 841 1-8 



host plants ' 841 8-9 



life cycle 841 9-22 



Sawmills, lumber production by classes of mills and by States 845 3-15 



Scale, cypress bark — 



associated insects 838 7-8 



bulletin by F. B. Herbert 838 1-22 



control, experiments and recommendations 838 19-22 



enemies 838 18-19, 22 



food plants 838 8 



f 2—4 8 



history, host plants, distribution, and spread 838< 12-U 



injury to trees 838 4-6, 22 



life history, and habits 838 12-17, 22 



Seed- 

 clean, sugar cane, importance in eradicating mosaic disease. . . 829 22 

 coat, sweet clover — 



seed, structure and microchemistry 844 31-34 



structure, relation to impermeability 844 26-35 



sweet clover — 



bulletin by H. S. Coe and J. N. Martin 844 1-39 



production, pollination studies 844 1-25 



wheat — 



anatomy, description 839 4 



treatment to control nematode disease 842 32-34 



