282 



INDEX 



Helenium autumnale, 102; tenuifolium 

 and bitter milk, 104 



Helianthus annuus, 213; tuberosus, 213, 

 225 



Hellebore, white, 51 



Helvellic acid, 20, 37 



Hemagglutination, 27 



Hemerocallis flava, 230 



Hemoglobinuria, the presence of hemo- 

 globin or red-blood coloring matter in 

 the urine. 



Hemolysins, 21 



Hemolysis, the destruction of the red- 

 blood corpuscles, 20 



Hemp, 228 



Herbe sardonique, 59 



Herbicide, chemical, 256 



Herd, John, mentioned, 131 



Herd's grass, 131, 136 



Hermaphrodite, applied to the flower 

 where the stamens and pistil are in 

 the same flower. 



Heteropogon contortus injury by, 2 



Hevea brasiliensis, 228 



Hibiscus esculentus, 234; trionum, 267 



Hieracium aurantiacum, 244 



History of seed testing, 259 



Hoe cake, 160 



Hominy, 160 



Holcus odoratus and hay-fever, 112 



Holy grass, 129 



Honey poisoned by nectar of mountain- 

 laurel, 94 



Hordeum distichon, 168; jubatum, injury 

 by, 3; spontaneum, 168; vulgare, 168 



Horse bean, 207 



Horse nettle, 243, 250 



Horse radish, 225 



Horse-tail, 39 



Hosackia americana, 212 



Huang-hua-ts'ai, 230 



Human food, Leguminosae, as, 184 



Hungarian millet, 147 



Hunt, Harris F., work on cereals, 180 



Hyacinth bean, 212 



Hyaline, transparent, or only partly so. 



Hydrocyanic acid, 67 



Hydrolysis, the decomposition of water 



during a chemical reaction. 

 Hymenaea, 184 

 Hyoscin, 101 

 Hyoscyamin, 101 

 Hypericum perforatum as a poisonous 



plant, 86 



Hypericum red, 87 

 Hypocotyl, that part of the axis of the 



plant embryo immediately below the 



seed leaves, or cotyledons. 



Icterus, a rare disease of the liver with a 

 wasting of the liver substance as- 

 sociated with jaundice. 

 Ilex paraguayensis, 229 

 Immunization, the process by which an 

 animal is rendered insusceptible to 

 disease. 



Immunization, theory of, 20-21 



Imparipinnate, pinnately compound with 

 an unpaired terminal leaflet. 



Imperfect, a flower without one of the 

 essential organs, either stamens, or 

 pistil. 



Impurities, poisonous plants as, 15 



Incised, said of leaves the margin of 

 which is deeply cut. 



Incomplete, without one of the floral 

 whorls. 



Indefinite, numerous, applied to stamens; 

 having indeterminate growth, as 

 applied to flower clusters. 



Indehiscent, not splitting open. 



Indian corn, 155; and hay-fever, 112 



Indian hemp, 254 



Indicators of sources of seeds, 266 



Indigo, 185; wild, 185 



Indigofera, 184; tinctoria, 185 



Indurated, hardened. 



Inebriants, n 



Infarct, an obstruction or plug. 



Inflorescence, the flower cluster. 



Inflorescence of grasses, 125; of Legumi- 

 nosae, 183 



