INDEX. 13 



Bulletiu No. Page. 



Potato, leaf hopper, outbreaks in 1921 1103 37-39 



Potatoes, injury by leaf hoppers in 1921 1103 37-39 



Prices- 

 lumber, fluctuations, 1899-1921 1119 8-11 



feedstuffs, factors controlling 1124 16-17 



Protoascus colorans, cause of rice disease 1116 3 



Pseudaonidia duplex, outbreaks in 1921 1103 31-32 



P seiidococcus citri. See Mealybug, citrus. 



Pyrausta nubilalis. outbreaks in 1921 1103 28-30 



Pyroderces rileyi, description, and relation to mealybugs 1117 3 



Rabbits, injury to pine seedlings ■ 1105 135 



Rand, Frederick V., investigation of kernel spot of pecan 1102 1, 14 



Rats, injury to pine seedlings 1105 135 



Razoumofsh/a cryptopoda, description and spread 1112 4 



See also Mistletoe. 

 Reddy, C. S., and W. E. Brentzel, bulletin on Flax, "Investi- 

 gations of heat canker of flax " 1120 1-18 



Redwood, lumber production, by States, 1920 1119 47 



Reforestation, cut-over lands in forests of Southwest, results 1105 68-82 



{21—23 27— 

 qn 39-40 



Resin, flow in pine trees, caused by mistletoe infection 1112 19 



Reynolds, R. V., and Albert H. Pierson, bulletin on "Lum- 

 ber cut of United States, 1870-1920" 1119 1-63 



Rhode Island, lumber cut, 1920, 1870-1920, value and kinds 1119p?^^fc^?A 



' ' ' ' I 48, 57, 59 



Rice — 



crop leases fi'om grain diseases 1116 1 



diseases, control by seed treatment, bulletin by W. H. Tis- 



dale 1116 11 



seedling blight and stack-burn, control by hot- water seed 



treatment : 1116 2-11 



Robinson, W. O., M. S. Anderson, W. H. Fry, P. L. Gile, and 

 H. E. Middleton, bulletin on Soils, "Absorption of colloidal 



and noncolloidal soil constituents " 1122 1-20 



Rodents, injurious to yellow pine seedlings 1105 134-135 



RoHWER, Carl, bulletin on Flume, "Farmer's short-box measuring 



flume " 1110 1-14 



Pvowden cotton, development and value 1111 17, 34 



Rupp, Philip, bulletin on Milk, "Detection of hypochlorites and 



chloramins in milk and cream " 1114 1-5 



Saidy date of Egypt, bulletin by S. C. Mason 1125 1-13 



Saidy date. See also Date, Saidy. 



Salts, inorganic, identification by microscope, tables, bulletin by 



William H. Fry 1108 1-22 



Satin moth, outbreak and spread in 1921 1103 46-48 



Sawmills — 



classes, number and cut, by States, 1920 1119 27-29 



number reporting, and estimated cut, 1899, 1904-1920, and 



1915-1920 1119 24-26 



Sayd date. See Date, Saidy. 



Saydeh date. See Date, Saidj^ 



Scab citrus — 



adaptation to various fruits, discussion 1118 21-22 



causal organism, characteristics and development 1118 8-11 



cause and control, bulletin by John R. Winston 1118 1-39 



control, directions 1118 30-34 



description on leaves, twigs, and fruit Ill 8 3-4 



disease anatomy 1118 12 



dissemination 1118 12-13 



historical notes 1118 3-7 



importance and distribution 1118 1-2 



inoculation experiments and results 1118 22-27 



literature review and list 1118 5-7, 36-38 



overwintering of organism 1118 10-11 



Scale, camphor, outbreaks in 1921 1103 31-32 



