Gordon, P. R., reference to work, 17 Grass staggers, Texas loco disease, symptoms, description, 11 Greshoff, M., reference to work, 35 Guinea pig, autopsy after loco poisoning, 43 pigs, loco-plant feeding experiments, 32, 43 Guthrie, F. B., reference to work, 17 Hairs on plants cause of loco disease, suggestion, 22, 28 Hallucinations caused by loco poison, 13 Hare, H. A., reference to work, 63 Harkins, W. D., reference to work, 49 Hayes, M. H., description of Texas grass staggers, 11 Hefftner, A., reference to work, 58 Heilborn, F., reference to work, 59 Hill, J. R., reference to work, 22 Hillebrand, method of determination of barium in ash of loco plants, 56 statement as to barium content of rocks in Rocky Mountains, 54 Hoffmann, F., reference to work, 26 Hogs, susceptibility to loco disease, 12 Holmes, E. M., reference to work, 35 Hornberger, R., reference to work, 53 Horses, autopsies after barium poisoning, 73 loco poisoning, 18, 26 barium poisoning, 73 disease caused by feeding on Darling pea (Swainsona galegifolia), 16 loco-plant experiments, 33 loco poisoning, notes, 16, 19, 20, 26 locoed, symptoms, 13 susceptibility to loco disease, 12 Hough, W., reference to work, 35 Howard, C. D., reference to work, 73 Hugo, Colo., soils, analysis for traces of barium, 57 Hunt, Reid, study of and experiments with loco plants, 33-34 Hurd, H. M., reference to work, 35 Husemann, T., reference to work, 62 Hydrocyanic acid, presence in loco plants, suggestion, 29 Indigo disease, similarity to loco disease, 16-17 Ingersoll, study of loco disease, 30