These acute symptoms were likewise produced by an extract of 500 grams of the fresh _Aragallus lamberti_ from Arizona preserved in chloroform water (rabbit weighing 1,998 grams). An aqueous extract of 150 grams of the dried _Astragalus mollissimus_[155] from Imperial, Nebr. (1906), caused death in one hour and fifty-eight minutes in a rabbit weighing 1,530 grams, and an extract of 100 grams killed in one hour and twenty-two minutes a rabbit weighing 736 grams. An aqueous extract of 100 grams of the dried _Astragalus bigelowii_ induced death in one hour and thirty-eight minutes, the rabbit weighing 1,502 grams. An aqueous extract of 150 grams of _Astragalus nitidus_ collected at Woodland Park, Colo., in 1906 induced death in three hours and five minutes, the rabbit weighing 1,672 grams. An aqueous extract of 200 grams of the dried _Astragalus bisulcatus_ caused death after several hours (at night), the rabbit weighing 2,423 grams. In certain cases this production of acute symptoms was not entirely a question of salt action, as was shown by certain other experiments. In other cases salt action seems to be the important factor, so that the production of these acute symptoms can not always be considered characteristic. * * * * * FOOTNOTES: [154] In all cases in which the plants were preserved with chloroform sealed vessels were used for shipping. The chloroform was carefully evaporated off in vacuo before feeding the extract, the evaporation requiring several hours. The plants were collected by Dr. C. Dwight Marsh, in charge of the field investigations at Hugo, Colo. [155] All extracts from dried material were made at Washington. =CHRONIC CASES.=