574 



Journal of Agricultural Research 



Vol. IV 



Nereocystis luelkeana — Continued. Page 

 effect of, on ammonification and nitrifica- 

 tion of dried blood 29~33 



forms of nitrogen in 46 



hydrolysis of 5° 



nitrification of, comparison with dried 



blood and cottonseed meal 23-26 



organic constituents of 39-56 



sulphur in S^ 



New Leaf and Twig Disease of Picea Engel- 



manni, A (paper) 251-254 



New Wheat Thrips, A (paper) 219-224 



A'icotiana spp., host plant of Bacterium solana- 



cearum 452 



Nitrogen — 

 available, effect of, on hydrocyanic-acid 



content of sorghum vulgare 180-1S4 



forms of, in kelp 46 



in Pacific coast kelps, availability of 21-38 



Norther, effect of, on milk yield of dairy cows 



fed with Opuntia spp 428-429 



Notes on the Plydrocyanic-Acid Content of 



Sorghum (paper) 179-185 



Nummularia discreta, source of infection of 



apple bitter-rot 61-64 



Nutrient — 

 amount of — 

 consumed by dairy cows on different 



rations 440-442 



digested by dairy cows on different 



rations 413,443-444 



digestibility of, in metabolism test of 

 lambs 463-464 



Oak. See Quercus spp. 

 Oats. See Azena saiiva. 



Observations on Rhizina Inflata (paper) 93-96 



Offspring — 



dairy cow, effect of Opuntia spp. on 426-427 



Shropshire sheep, degree of resemblance to 

 parents with respect to birth as twins. 479-510 

 Oospora scabies, syn. Actinomyces chroma 



genus. 

 Opuntia — 

 cyanella, use of, in feeding experiments with 



dairy cows 406-407 



gommei, use of, in feeding experiments with 



dairy cows 406-407 



spp.— 



analysis of 439-440 



comparative value of spiny and spineless 



varieties of 431-432 



cost of harvesting 430-431 



digestibility of 418-421 



comparison with other feeds 445-450 



effect of — 

 on body weight of dairy cows. 411-412, 437-439 



on health of dairy cows 424-427 



on milk production 411,435-437 



on offspring of dairy cows 426-427 



on quantity of water drunk by dairy 



cows 428 



northers on milk yield of cows fed 

 with 428-429 



Opuntia — Continued. Page 



spp. — Continued . 



energy value of 413-414 



influence of — 



on digestibility of other feeds 420-421 



on flavor of milk 423-424 



on milk fat 422-423 



on quality of butter 423-424 



laxative property of, effect of sodium 



chlorid upon 427 



method of harvesting 430-431 



nutrients of — 



consumed by dairy cows 440-442 



digested by dairy cows 413, 443-444 



nutritive value of 416-417 



use of, as maintenance ration of dry cows. 430 

 Orange. See Citrus aurantiaca. 

 Organic Constituents of Pacific Coast Kelps 



(paper) 39-58 



Overwintering, means of control of Phoma 



betae on Beta vulgaris 175-176 



Ozarks, occurrence of apple bitter-rot in 59-61 



Panicum crus-galli, food plant of Prosopo- 



ihrips cognatus 221 



Paramecium spp., development of, in soil. . 527, 556 



Parasite, asparagus-beetle egg. See Tetra- 

 stichus asparagi. 



Parents, Shropshire sheep, degree of resem- 

 blance to offspring with respect to birth as 

 twins 479-510 



Parker, J. R. (paper) Influence of Soil Mois- 

 ture upon the Rate of Increase in Sugar- 

 Beet Root-Louse Colonies 241-250 



Parthenium spp., food plant of Diaprepes 



spengleri 260-261 



Pea, garden. See Pisum satiiam. 



Pelagophycus porra — 

 ammonification of, comparison with dried 



blood and cottonseed meal 23-26 



availabihty of nitrogen in 21-38 



composition of ash of 24 



forms of nitrogen in 46 



hydrolysis of 50 



nitrification of, comparison with dried 



blood and cottonseed meal 23-26 



organic constituents of 39-56 



sulphur in 51 



Pemphigus betae — 



control of 250 



influence of soil moisture upon increase of . 241-250 



Pepper. See Capsicum, anmium.. 



Peranema iriehopkorum, development of, in 

 soil 527 



Pertea gratissima, food plant of Diaprepes 

 spengleri 261-262 



Phaseolus vulgaris, inoculation of, with Phoma 

 destructiia 12 



Phenol, germicidal efficiency of 68, 89-90 



Phillips, W. J. (paper) Further Studies of 

 the Embryologj' of Toxoptera Graminum . 403-404 



Phlox dr u m m o n dii — 



cross-pollination of 296-301 



heredity of color in 293-302 



