MISCELLANY.
The Population of Balloons.—A very curious apparatus for the above purpose has been devised by Mr. Butler, one of the members of the Aeronautical Society, which has been lately established. It consists of a pair of wings, to operate from the car of the balloon, and whose downward blow is calculated to strike with a force exceeding forty pounds, a power equivalent to an ascensive force of one thousand cubic feet of carburetted hydrogen. The action required is somewhat similar to that of rowing, and would be exactly so if at the end of the stroke the oars sprang backward out of the hands of the rower; but, in this case, the body is stretched forward as if toward the stern of the boat, to grasp the handle and repeat the process, during which an action equivalent to "feathering" is obtained. It is anticipated that these wings, acting from a pendulous fulcrum, will produce, in addition to the object for which they are designed, two effects, which may possibly be hereafter modified, but which will be unpleasant accompaniments to a balloon ascent, namely, the oscillation of the car and a succession of jerks upward, first communicated to the car from below, and repeated immediately by an answering jerk from the balloon.—London Popular Science Review.
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.
The Influence of Light on the Twining Organs of Plants.—At a meeting of the French Academy, held on Oct 26th, a valuable paper on this subject was read by M. Duchartre. The memoir deals with the questions already discussed by Mr. Darwin, and in it the French botanist records his own experiments and those of other observers, and concludes that there are two groups of twining plants: 1. Such plants as Dioscorea Batatas and Mandevillea suaveolens, which have the power of attaching themselves to surrounding objects only under the influence of light 2. Species such as Ipomoea purpurea and Phaseolus, which exhibit this power equally well in light and darkness.
Chronicles of Yorkshire.—To the series of works published under the direction of the Master of the Rolls, the first volume of the interesting chronicles of an ancient Yorkshire religious house, the Cistercian Abbey of Meaux, near Beverley, has been added. Its title runs thus: "Chronica Monasterii de Melsa, a Fundatione usque ad Annum 1396, Auctore Thoma de Burton, Abbate, accedit continuatio ad Annum 1406, a Monacho quodam Ipsius Domus. Edited from the autographs of the author, by Edward A. Bond, Assistant-Keeper of Manuscripts and Egerton Librarian in the British Museum." The abbey was founded in 1150, by William le Gros, Earl of Albemarle, and its first abbot and builder was Adam, a monk of Fountains Abbey. Thomas of Burton, who was abbot in 1396, brings the history down to that year. This first volume ends with the year 1247.—Reader.