Oct. 4, 1915-Mar. 27, 1916 
Index 
1201 
Page 
Morphology and Biology of the Green Apple 
Aphis (paper). 955“994 
Mosaic disease— 
distribution of the virus of. 251-256 
occurrence of virus in plants of Nicotiana 
tabacum . 254 
virus of, in placental structure of plants of 
Nicotiana tabacum . 252-253 
Movement of moisture from warm to cold 
soil. 141-156 
Mu cor sp., parasite of Solanum tuberosum. .. 186, 
,, 201-203 
Musa spp.— 
green fruits of, immunity of, to attack by 
Ceratitis capitata . 799-801 
immunity of, to attack by Ceratitis capitata 793-804 
Muscular work, apparatus for measuring.. 342-343 
Mustard, white. See Brassica alba. 
Needle, penetration— 
use of, in testing bituminous materials. 1121-1126 
results of standardization test of. 1123 
results of tests of. 1124-1126 
New Interpretation of the Relationships of 
Temperature and Humidity to Insect De¬ 
velopment, A (paper) 1183-1191 
New Irrigation Weir, A (paper). 1127-1136 
New Penetration Needle for Use in Testing 
Bituminous Materials, A (paper). 1121-1126 
New Spray Nozzle, A (paper). 1177-1182 
Nicotiana tabacum , distribution of the virus 
of the mosaic disease in. 251-256 
Nitrate production— 
effect of— 
calcium sulphate on. 774“775 
sulphur on. 774“775 
Nitrogen Content of the Humus of Arid Soils 
(paper). 909-916 
Nitrogen— 
humus, methods for determining.911-913 
relation of, to humus in California soils... 914-915 
North Carolina, petrography of soils of- 569-577 
Nozzle, spray, a new. 1177-1182 
Nursery, forest, disease in, caused by Peri- 
dermium filamentosum . 781-785 
Nutrition, plant, relation of sulphur com¬ 
pounds to. 233-250 
Oak, white. See Quercus alba. 
Oats. See A vena sativa. 
Observations on Life History of the Cherry 
Leaf Beetle (paper). 943-950 
Occurrence of Manganese in Wheat (paper). 349 - 355 
Oospora scabies , syn. Actinomyces chromogenus. 
Orthoptera, agency in dissemination of Cer~ 
cospora per sonata . 898-901 
Oryza sativa , ash analyses of.359-363 
Oskamp, J. (paper). Soil Temperatures as 
Influenced by Cultural Methods. 173-179 
Oxidases, determination of, in flesh of Malus 
sylvestris . 112-113 
Panax quinquefolium — 
blackrotof. 294-296 
host plant of— 
Alternaria panax . 181-182 
Phytopkthora cactorum . 59,67 
Sclerotinia libertiana . 291 
Panax quinquefolium —Continued. Page 
inoculation of, with Sclerotinia libertiana 
from various sources. 292-293 
pathogenicity and identity of Sclerotinia 
libertiana and Sclerotinia smilacina on.. 291-298 
rootrotof. 181-182 
whiterotof. 291-294 
Panicum sp., host plant of Comandra umbel - 
lata . 134 
Parasitism of Comandra umbellata (paper). 133-135 
Pathogenicity and Identity of Sclerotinia 
libertiana and Sclerotinia smilacina on Gin¬ 
seng (paper). 291-298 
Pea- 
See Pisum sativum. 
Canada field. See Pisum arvense. 
Peanut. See Arachis hypogaea. 
Pearl, R. (paper), Measurement of the Winter 
Cycle in the Egg Production of Domestic 
Fowl. 429-437 
Pearl, R., and Surface, F. M. (paper), A 
Method of Correcting for Soil Heterogeneity 
in Variety Tests. 1039-1050 
Pectinase, determination of, in flesh of Malus 
sylvestris . 114-115 
Pemberton, C. E., and Back, E. A. (paper)— 
Banana as a Host Fruit of the Mediterra¬ 
nean Fruit Fly. 793-804 
Effect of Cold-Storage Temperatures upon 
Mediterranean Fruit Fly. 657-666 
Penetration test, asphalt, effect of controllable 
variables upon. 805-818 
Perennial Mycelium in Species of Peronospo- 
raceae Related to Phytophthora infestans 
(paper). 59 - 7 ® 
Peridermium — 
cerebrum, parasite of Pinus divaricata . 289 
comptoniae , parasite of Pinus (murrayana ) 
contorta . 290 
filamentosum— 
causal organism of disease in forest nur¬ 
series. 781-785 
parasite of— 
Castilleja miniata . 781-785 
Pinus contorta . 783 
Pinus ponderosa . 781 
montanum, parasite of Pinus murrayana ... 785 
pyriforme — 
serial form of Cronartium Pyriforme . 289 
parasite of— 
Comandra umbellata . 289 
Pinus arizontca . 290 
Pinus divaricata . 133»289-290 
Pinus ( murrayana ) contorta .133,289-290 
Pinus ponderosa . 133 
Pinus ponderosa scopulorum . *33;290 
Pinus Pungens . 133; 290 
Pinus rigida . 133,289-290 
two new hosts for. 289-290 
spp., parasites of Quercus spp. 783 
Peronosporaceae, relation of perennial myce¬ 
lium in, to Phytophthora infestans . 59-70 
Peronospora — 
alsinearum, parasite of Stellaria media ... 59,67,68 
dipsaci, parasite of Dipsacus fullonum . 59; 67 
effusa — 
parasite of— 
Atriplex hortensis . 59; 67 
Spinacia oleracea . 59,67,68 
