[Illustration: $1] [Illustration: $1] [Illustration: $1] In other cases very good results have been obtained from giving permanganate of potash in the form of a drench: 5 to 10 grains for an adult sheep or pig, 15 to 20 grains for a horse, and 30 to 50 grains for an ox, dissolved in a pint or two pints of water. [Illustration: $1] [Illustration: $1] * =Delphinium geyeri.=—The Wyoming larkspur is well known throughout Wyoming, Colorado, and Nebraska under the name of poison weed. It is reported to be the most troublesome plant to stock in Wyoming, the dark-green tufts of foliage being especially tempting in spring when the prairies are otherwise dry and barren. =Delphinium recurvatum.=—This species of larkspur grows in wet subsaline soil in the southern half of California. It has been reported from San Luis Obispo county as fatal to animals. =Delphinium scopulorum.=—The tall mountain larkspur of the Rocky Mountains has been reported to the Canadian Department of Agriculture as poisonous to cattle in the high western prairies of Canada. =Delphinium trolliifolium.=—This plant is common throughout the coast region of northern California, Oregon, and Washington. In Humboldt County, Cal., it is known as cow poison, on account of its fatal effect on cattle. Its toxic character has been questioned. Perhaps it is not equally poisonous throughout all stages of its growth. * =Helleborus viridis.=—The green hellebore is a European plant, sometimes self-sown from gardens. All parts of the plant are poisonous. Cattle have been killed by eating the leaves. POISONING BY HELLEBORE. [Illustration: $1] This form of poisoning is of slow progress, the plant producing irritation of the digestive mucous membrane. The =symptoms= consist in loss of appetite, blackish, glairy diarrhœa, and intermittence of the pulse. * =Ranunculus sceleratus.=—The cursed crowfoot, or celery-leafed crowfoot, is found throughout the eastern half of the United States and also in Europe. Cattle generally avoid all of the buttercups, but fatal cases of poisoning from this plant are recorded in European literature. When dried in hay, the plant appears to be non-poisonous. The bulbous crowfoot (_R. bulbosus_) and the tall crowfoot (_R. acris_) are well-known to be very acrid in taste, and it is probable that all of the species which grow in water or in very marshy land are poisonous. POISONING BY RANUNCULACEÆ. Poisoning only occurs when the green plants are eaten. Drying causes certain essences contained in them to disappear, and thus destroys their toxicity. This form of poisoning is indicated by yawning, colic, blackish, fœtid diarrhœa, and rapid loss of strength. The animals suffer from stertorous breathing, weakness of the pulse, and aberration of vision. They die in convulsions. BERBERIDACEÆ (BARBERRY FAMILY).