INDEX. 15 



Bulletin 



* No. Page. 



f 50-5 1 



Pruning, trees, for shade 816-| 53-55 



Pump house, cotton warehouse, construction 801 60 



PjTethrotoxic acid, active principle of pyrethrum powder 824 74-79 



Pyrethrurn — 



active principle of pyrethrvmi powder 824 74, 79 



cinerariaefolium, gro\\dng, harvesting, etc., in different countries. 824 6-8 



spp. , use in making insect powder 824 1-10 



See also Insect powder. 



Pythium clebaryanum, notes 818 4, 13 



Rabbits, infestation with Ascaris, experiments, details 817 37 



Ransom, B. H., and W. D. Foster, bulletin on "ObserA-ations on 



the life history of Ascaris lumbricoides " 817 1-47 



Rats — 



Ascaris pneumonia, observations 817< 27-28 



infestation ^vith Ascaris, experiments 817 34 



Reed-grass, peat formation 802 26, 27 



Reforestation, jack pine, methods 820 31-32 



Reinforcement, concrete, in warehouse construction 801 32-37 



Rhizoctonia, species, control in soils, note 818 13 



Rhode Island — 



peach growing, production, districts, and varieties 8C6< -;-,% A 



pear industry, varieties grown 822 6 



Richland oats, characters 823 69 



Riley, D. C, experimental work in growing insect flowers 824 8, 9 



Ripening, olives in California, and pickling, chemical studv, bul- 

 letin by R. W. Hilts and R. S. Hollingshead .' 803 1-24 



no 99 ^8 



Roaches, control by pyrethrum 824<^ ' ' "^l °' 



RoARK,.R. C, C. C. McDonnell, and G. L. Keenan, bulletin on 



' ' Insect powder " 824 1-100 



RoBOTKA, Frank, B. B. Mason, and A. V. Swarthout, bulletin on 



"A system of bookkeeping for grain elevators" 811 1-53 



Roofing, materials for cotton warehouse 801 38 



f32— 35 38— 



Roofs, warehouse, construction details and materials 801< on a(>_4q 



Roots, tree, protection during transplanting 816< 47 40 



Rose leafhopper, description, distribution, life histoiy, and control. . 805< q2_q^ 



See also Leafhopper, rose. 



Rot, dry, in timbers, control 801 55, 56 



Roundworms, hum.an, observations on life history, bulletin by B. H. 



Ransom and W. D. Foster 817 1-47 



See also Ascaris. 



Rubber tree, use as street tree, and regions adapted to 817 1-47 



Rural community buildings, United States, bulletin by W. C. Nason 



and C . W. Thompson 825 1-36 



See also Buildings. 



Russia, grain region . soil and climatic characteristics 823 4 



Rust, gall-forming, jack pine 820 21 



Rye infestation — 



by jointworms 808 13-14 



by straw-worms 808 14-15 



Sabal, description, and use as street tree 816] Qr_Q- 



Sacbrood, characteristics | ^^^ ^^ 



Saccharomycetes, true yeasts, distinction from pseudo yeasts 819 2-3, 13, 14 



Salt, use to prevent freezing of water 801 62-63 



Sand, use on peat soils 802 8, 15 



