Experiments, laboratory, with barium salts, 57-62 loco plants, 36-56, 66-71 loco poisoning and barium feeding, results, 5 Extracts of loco plants, digestion with pepsin and pancreatin, experiments, 66-68 testing, importance, 76 use in laboratory experiments, varying toxicity, 36-49, 66-71 Falk, reference to work, 74 Faust, E. S., reference to work, 31 Faville, reference to work, 18 Felletar, E., reference to work, 62 Ferguson, J. C., reference to work, 63 Filippi, E., reference to work, 62 Fletcher, J., reference to work, 10 Fleurot, reference to work, 35 Folin, O., reference to work, 56 Food, use of loco plants, 35, 74 Forage, use of Astragalus nuttallianus and A. crassicarpus, 35 Forchhammer, J. G., reference to work, 53 Foster, F. B., reference to work, 26 Frankforter, G. B., reference to work, 35 Fraps, G. S., reference to work, 72 Fresenius, C. G., reference to work, 72 Fritillaria pudica, supposed cause of loco disease, 10 Frogs, loco-plant experiments, 17, 22, 24 poisoning, 17, 24 Fröhlich, A., reference to work, 65 Fröhner, E., reference to work, 73 Fuchs, C. J., references to work, 65, 74 Funaro, A., reference to work, 64 Garbanzillo, Spanish name for Astragalus mollissimus, derivation, 11 Gibbons, H., reference to work, 21 Givens, A. J., references to work, 10, 35 Glands, swelling, in locoed animals, note, 63 result of use of barium on human beings, 63 Glover, R. M., reference to work, 61 Goat disease, South Africa, note, 17 Goats, loco poisoning, 22 susceptibility to loco disease, 12