[184] Kobert, R. Kann ein in einem Pflanzenpulver gefundener abnorm höher Barytgehalt erklärt werden durch direkte Aufnahme von Baryumsalze durch die lebende Pflanze aus dem Boden? Chem. Zeit., vol. 10, p. 491. 1899. NOTE.--The writer has also found barium in entirely different botanical families from the loco-weed, and it is hoped a report can shortly be made of some of these. NOTE.--The first sample of ash analyzed by the Bureau of Chemistry had 0.21 per cent Fe_{2}O_{3}, 0.92 per cent Al_{2}O_{3}, 0.98 per cent CaO, 0.37 per cent MgO, 5.50 per cent SiO_{2}. The second lot was only examined for certain constituents, and gave K_{2}O, 2.25 per cent; CaO, 1.20 per cent; MgO, 0.41 per cent; P_{2}O_{5}, 0.52 per cent; and SO_{3}, 0.24 per cent. =TOTAL ASH DETERMINATIONS OF LOCO PLANTS.= The reports of the ash analyses of the loco plants show marked variations in the total amount of the ash. Thus, from _Aragallus lamberti_ Dyrenforth obtained 4.32 per cent and O'Brine 13.52 per cent of ash. The Bureau of Chemistry analyzed two different samples of this dried plant and reported in one case 11.15 per cent and in the second 11.64 per cent of ash. O'Brine[185] obtained 13.52 per cent of ash from the same species. The writer's analysis[186] gave in one sample of _Aragallus lamberti_, collected at Hugo, Colo., in 1907, 18.8 per cent of ash; a second lot (1907), 12.44 per cent; a third (1906), 11 per cent, and a fourth (May, 1905) gave 37.3 per cent of ash.[187] One lot from Woodland Park, Colo. (October, 1906), gave 6.4 per cent. One lot from Hugo, Colo. (October, 1907), yielded 9.6 per cent. In the case of _Astragalus mollissimus_, Wentz obtained 6.76 per cent, Sayre 12.01 per cent, Kennedy 20 per cent, O'Brine 12.15 per cent, while the sample analyzed by the Bureau of Chemistry gave 18.4 per cent of ash. One sample from Kit Carson County, Colo. (December, 1906), which proved inactive physiologically, gave an ash content of 6.9 per cent. A sample of _Astragalus missouriensis_ collected at Hugo, Colo., June, 1907, yielded an ash content of 21.8 per cent, and an _Astragalus missouriensis_ collected at Pierre, S. Dak., September, 1907, yielded 27 per cent. An _Astragalus nitidus_ from Custer, S. Dak. (July, 1907), gave 5.2 per cent ash, while an _Astragalus nitidus_ collected at Woodland Park, Colo., in October, 1906, yielded 7.8 per cent, and another specimen of _Astragalus nitidus_ also collected at Woodland Park, Colo., in October, 1907, gave 12.2 per cent. An _Astragalus drummondii_ from Custer, S. Dak. (July, 1907), gave 5.9 per cent. _Astragalus pectinatus_ (Hugo, June, 1907) yielded 6.1 per cent. A fresh (undried) specimen of _Astragalus mollissimus_ (unknown origin, November, 1907) yielded 3.8 per cent of ash. One sample of _Astragalus decumbens_ (Ephraim, Utah, August, 1907) gave 21.8 per cent of ash.