422 



Index 



Gleosporium, soraurianum, 247 



stanhopeae, 303 

 'violae, 256 

 Glomerella cincta, 300 

 piperata, 170 



rufomaculans var. Cycla- 

 minis, 249, 338, 343 

 Gossard, H. A., 377 

 Graphiola phoenicisy 307 

 Graphium bulbicola, 306 

 Grape hyacinth, 272 



cultural considerations, 272 

 Grossenbacher, J. G., 156 

 Green, S. N., 49 



W. J, 49 

 Greenhouse pests, 364 



soil, summer treatment, 48 

 Gregg, O. T., 100 

 Griffon, M. M., 252, 297 

 Gussow, H. T., 275 



Hall, J. G., 230, 320 

 Halsted, B. D., 200, 215, 229, 



245, 259, 265, 270, 279, 284, 



300, 304, 308, 326 

 Harshberger, J. W., 246 

 Harter, L. L., 97 

 Hartwell, 29 

 Haskins, H. D., 134, 335 

 Heald, F. D., 93, 228 

 Heat requirements, 71 

 Heliothrips haemorrhoidalis, 369 

 Hellebore, 382 

 Hemileia oncidii, 296 

 Hemileia vastatrix, 260 

 Henning, P., 297, 298, 305 

 Herbert, A., 294 

 Heterodera radicicola, 23, 26, 



129, 211, 234, 347 

 Heterosporium echinulatum, 229 



variabtle, 179 

 Hicks, G. H., 107 

 Hodgkiss, H. E., 228 

 Hopkins, E. F., 350 

 Hori, S., 295 



Hot water sterilization, 37 

 Howard, W. L., 86 

 Howitt, J. E., 182 

 Humaria thozettt, 306 

 Humbert, J. G., 35 



Humidity, affected by walks in 

 the house, 76 



effect on greenhouse crops, 75 



effect on roses, 73 



relation to greenhouse cul- 

 ture, 74 ^ 



the determination of, 77 

 Hyacinth, 26 



bulb rot, 270 



damping off, 269 



diseases of, 266 



gumosis, 266 

 Hyacinth nematode, 271 



soft white rot, 267 



Sclerotinia rot, 270 

 Hyacinthus orientalis, 266 

 Hydrangea, 272 



cultural considerations, 27* 



diseases of, 273 



hortensis, 272 



leaf spot, 274 



rust, 273 

 Hydrocyanic-acid gas, 385 

 Hygienic considerations, 408 

 Hypocrella gardeniae, 260 



Insecticides, 381 



Insect infested soil, control, 48 

 Inverted pan method, 34 

 Iron, changes of, 14 

 Isopods, 377 

 Istvanffi, G. De, 150 



Japan lily, diseases of, 283 

 Jensen, C. M., 332 

 Johnson, J., 46 

 Jones, L. R., 358 



Kelsey, J. A., 245 

 Kentia belmoreana, 308 



canterburyana, 308 



fosteriana, 308 

 Kerosene emulsion, 399 

 Kirchner, O., 260 

 Klobahn, H., 276 

 Knap solution, 86 

 Knight, L., 219 



Lactuca sativa, 145 

 Laelia, culture of, 292 

 Lamkey, M. R., 221 



