884 
Journal of Agricultural Research 
Vol. XXI 
Potato—Continued. Page 
sweet— 
effect of Rhizopus tritici on respiration 
and carbohydrate changes. 627-635 
reduction in strength of mercuric-clilorid 
solution. 575-587 
storage-rot fungi, respiration. 211-226 
wound-cork formation. 637-647 
Pritchard, Fred J., and Porte, W. S. 
(paper):— 
Collar-Rot of Tomato. 179-184 
Relation of Horse Nettle (Solanum caro- 
linense) to Leafspot of Tomato (Scptoria 
lycopersiei). 501-506 
Protein— 
digesters in silage. 770 
in cucurbita seeds. 526 
in wheat, relation of hardness. 507-522 
milk, in ration for pigs. 281-341 
in different rations. 327-334 
Pruning, effect on concentration of cell 
sap. 87-91 
Pseud 0 mon as — 
apii, cause of leafspot of celery. 185-188 
destructans , enzym production. 611 
taxifolia, chlorosis. 153-171 
Pumpkin. See Cucurbita pepo. 
Pyrus communis, growth of branches.849-876 
Quack grass. See Agropyron repens. 
Quality of Irrigation Water in Relation to 
Land Reclamation (paper). 265-278 
Ramularia sp., isolated from potatoes. 828 
Rand, Frederick V., and Cash, Lillian C. 
(paper): Stewart’s Diseases of Com. 263-264 
Rate of Culm Formation in Bromus inermis 
(paper). 803-816 
Ration, effect on development of pigs. 279-341 
Rectal temperatures of dry cows. 4-28 
Recurvaria milleri — 
host. 137 
life cycle. 129-137 
natural enemies. 138 
Red Date-Palm Scale, Phoenicococcus mar- 
latti: A Technical Description (paper).. 669-676 
Red top. See Agrostis alba. 
Reduction in the Strength of the Mcrcurie- 
Chlorid Solution Used for Disinfecting 
Sweet Potatoes (paper). 575-587 
Reed, Howard S. (paper):— 
Correlation and Growth in the Branches of 
Young Pear Trees. 849-876 
Growth and Sap Concentration.. 81-98 
Relation of Hardness and Other Factors to 
Protein Content of Wheat (paper). 507-522 
Relation of Horse Nettle (Solanum caro- 
linense) to Leafspot of Tomato (Septoria 
lycopersiei) (paper). 501-506 
Reliability of the Nail Test for predicting the 
Chemical Compost ion of Green Sweetcom 
(paper). 817-820 
Respiration and Carbohydrate Changes Pro¬ 
duced in Sweet Potatoes by Rhizopus tri¬ 
tici (paper).. 627-635 
Respiration of Sweet Potato Storage-Rot 
Fungi When Grown on a Nutrient Solution 
(paper). 211-226 
Rhizoctonia solani — Page 
cause of collar-rot of tomato. 179-184 
Syn. Corticium vagum. 
Rhizomes in timothy. 173-178 
Rhizopus — 
nigricans — 
inability to utilize cane sugar. 189 
susceptibility of injured seeds. 99-122 
tonkinensis , inversion of cane sugar. 189 
tritici — 
cause of potato rot. 211-226 
glucose as a source of carbon. 189-210 
prevention of infection by wound-cork 
infection. 642-646 
secretion of pectinase. 609-625 
Rhodes grass. See Chloris gayayna. 
Rice, host of Sclcrolium rolfsii and 5 . oryzae. 649-658 
Richards, B. L. (paper): Pathogenicity of 
Corticium vagum as Affected by Soil Tem¬ 
perature. 459-482 
Ricinus communis, host of Bacterium solan- 
acearum . 255-262 
Roberts, Herbert F. (paper): Relation of 
Hardness and Other Factors to Protein 
Content of Wheat. 507-522 
Roguing, effect on variations in cotton. 233-235 
Rooting Stems in Timothy (paper). 173-178 
Rootrot, cotton, in the San Antonio rota¬ 
tions. 117-125 
Rootstocks in timothy. 173-178 
Rust, varietal susceptibility of beans.385-404 
Saccharomyces, odor on beef. 695 
Salts, assimilation by corn. 545~573 
Sandy Crystals in Ice Cream: Their Separa¬ 
tion and Identification (paper). 791-796 
Sap concentration, relation to growth. 81-89 
Sarcophaga spp., dispersion by flight. 736-766 
Satsuma orange. See Citrus nobilis var. 
unshin. 
Scab- 
citrus, temperature relations. 243-253 
tomato. See Bacterium exitiosum, 11. sp. 
Scambus sp., parasite of Recurvaria milleri ... 138 
Schultz, E. S., and Folsom, Donald (paper): 
Leaf roll, Net-Necrosis, and Spindling- 
Sprout of the Irish Potato. 47- 80 
Sclerotinia — 
cinerea, production of oxalic acid. 631 
libertiana, secretion of ferment. 610 
sp., isolated from potatoes. 828 
Sclerotium — 
bataticola — 
cause of potato rot. 211-226 
glucose as a source of carbon. 189-210 
oryzae, cause of stemrot of rice.655-657 
rolfsii, cause of seedling-blight of rice. 649-655 
Scofield, C. S. (paper): Cotton Rootrot in the 
San Antonio Rotations. 117-12 5 
Scofield, Carl S., and Headley, Frank B. 
(paper): Quality of Irrigation Water in 
Relation to Land Reclamation. 265-278 
Scotch pine. See Pinus sylvestris. 
Screw-worm fly. See Chrysomya macellaria. 
Seed- 
celery, treatment for, control of Septoria 
blight. 369-373 
