_The Poisonous Principle of Mushrooms._--This, which is called amanitine, has been separated and experimented on by M. Letellier, who has quite lately presented a paper recording his investigations to the French Academy of Medicine. He experimented with the alkaloid upon animals, and found the same results as those stated by Bernard and others to follow the action of narceine. He thinks amanitine might be used in cases where opium is indicated; and states that the best antidotes in cases of poisoning by this principle are the preparations of tannin. The general treatment in such cases consists in the administration of the oily purgatives. _The Conditions of Irish Vegetation_.--The inquiries of Dr. David Moore have shown that whilst Ireland is better suited than any other European country to the growth of green crops, it is unsuited to the growth of corn and fruit-trees. This is attributable to the following circumstances; the extreme humidity of the climate, and the slight differences between the winter and summer temperatures--a difference that in Dublin amounts to only seventeen and a half degrees, and on the west coast is only forty-four degrees. The mean temperature of Ireland is as high as though the island were fifteen degrees nearer the equator. _Libraries of Italy_.--There are 210 public libraries in Italy, containing in the aggregate 4,149.281 volumes, according to the _Revue de l'Instruction Publique_. Besides these, there are the libraries of the two Chambers, that of the {139} Council of State, and many large private collections, easily accessible. Then there are 110 provincial libraries, and the collections belonging to 71 scientific bodies. In the year 1863, 988,510 volumes were called for by readers, of which 183,528 related to mathematics and the natural sciences; 122,496 to literature, history, and the linguistics; 70,537 to philosophy and morals; 54,491 to theology; 193,972 to jurisprudence; 261,869 to the fine arts; 101,797 to other subjects. _The Poisonous Effects of Alcohol_--Supporters of teetotalism will be pleased to peruse an essay on this subject by M. G. Pennetier, of Rouen. The memoir we refer to is a "doctor's" thesis, and it treats especially of the condition known as alcoholism. The following are some of the author's conclusions: (1) Alcoholism is a special affection, like lead-poisoning; (2) the prolonged presence of alcohol in the stomach produces inflammation of the walls of this organ and other injurious lesions; (3) the gastritis produced by alcohol may be either acute or chronic, and may be complicated by ulcer, or general or partial hypertrophy, or contraction of the opening of the stomach, or purulent sub-mucous infiltration; (4) in certain cases of alcoholic gastritis, the tabular glands of the stomach become inflamed, and pour the pus, which they secrete, into the stomach or into the cellular tissue of this organ.--_Popular Science Review._