=Lupinus leucophyllus.=—This herbaceous shrub is a representative of a very large genus of plants, many of which are widely and abundantly distributed throughout the western United States, and are generally known as lupines. The above species is very abundant in Montana, where it is said to have caused the death of a very large number of sheep. There is some question whether the animals are killed by a poisonous constituent of the plant or merely by tympanites. The seeds of all the lupines are probably deleterious in the raw state. In Europe, however, the seeds of _Lupinus albus_, after the bitter taste has been removed by steeping and boiling, are eaten by human beings as well as by cattle. POISONING BY LUPINES (LUPINUS LEUCOPHYLLUS; L. SERICEUS; L. CYANEUS). These plants are commonly known by the names blue pea, blue bean, and wild bean. They are coarse, silky-haired perennial herbs, with blue flowers arranged in conspicuous terminal racemes, which blossom in June and July, with long-stemmed leaves, which are divided into from seven to eleven leaflets radiating from a common point. The fruit is a hairy, several-seeded pod, and the seeds are small and somewhat flattened. As a rule these plants do not occur in the flat river bottoms. They occur most abundantly on the foothills and mountain ranges at moderate elevations. During the season of 1900 the lupines in Montana began to bloom about May 20th, and the first full pods were collected on June 5th. Lupines are not very extensively eaten by sheep during the spring and summer, except when they are unusually hungry or are being driven from one range to another. Lupines are more often eaten by sheep in summer on the mountain sides, and in the fall and early winter after early frosts have opened the pods and the seeds have fallen out. Lupine hay is greedily eaten by all kinds of stock during the winter, and large quantities of this hay have been fed for the past fifteen or twenty years. Lupine hay is cut in different years at dates ranging from the 1st of July to the middle of September. When cut during the first half of July the newly ripe pods, full of seeds, are secured in the hay. When, however, the harvesting of lupine hay is postponed until September, the pods become ripe and split open, and the majority of seeds fall out. A striking variation in the quantity of pods containing seeds is noted during different years. During seasons in which May and June are wet the quantity of pods is usually large. When, however, these months are dry only a few pods are found on each plant, and a vast majority of the flowers fail to be fertilised. Dr. Wilcox has observed that sheep are especially fond of the pods of various leguminous plants before they become mature and while they are still in a succulent condition.