Page:Popular Science Monthly Volume 17.djvu/446

432 American Associations, and has already enrolled one hundred and fifty members. Its first bulletin contains a paper on the fevers of Algeria, which affords the most satisfactory evidence that a great improvement has been made in the sanitary condition of the country, by the operation of the hygienic measures which have been carried out by the civil and military authorities, consisting of the clearing of the ground, drainage, plantations of trees, etc. During the thirty years from 1845 to 1875 the death-rate of the European population fell from 50 to 38 per thousand inhabitants. The diminution of mortality is shown in a still more striking degree in the army, where it fell from 77'8 per thousand men between 1837 and 1846, to 12·3 per thousand in 1876, and 12·5 in 1877. These proportions are very near to the rate of mortality in the interior of France itself, which was equivalent to ten deaths among a thousand effective men during 1876.

Author:William Boyd Dawkins F. R. S., of Owens College, Manchester, has engaged to deliver a course of lectures on "Primitive Man," at the Lowell Institute, Boston, in October and November of this year.

recently delivered a lecture in Paris on "Cold and its Applications to Science and Industry," in the course of which he struck a medal with fifteen kilogrammes (or thirty-three pounds) of solidified mercury.

case mentioned by Dr. Coues of a breed of one-toed hogs has a parallel in that of a one-toed deer, the feet of which were recently presented to the California Academy of Sciences. The third toe is described as the only one used for progression, though there were different degrees of development in the respective feet.

F. R. S., F. L. S., died at Selborne, Hampshire, England, on March 13th, aged eighty-seven. He was for a long time Professor of Zoölogy at King's College, and the writer of several works on natural history. The last eighteen years of his life were spent at the breakers at Selborne, the former home of Gilbert White the naturalist, which he purchased, and made the repository of numerous memorials of White, that, with the house and grounds, were always kept open to visitors.

of the London "Morning Post," who has been examining the condition of the Riviera between Cannes and San Reno, reports the existence of an interesting state of things in that famous health resort. There are no sewers; cesspools are universal, and so placed as to be sources of danger to the inmates of the houses; public water-supply there is none, and the rainwater drains, which are also conduits for the cesspools, have slight gradients, are never flushed, and are generally the sources of foul emanations; and, to cap all, the beaches and promenades near the sea are soaked with sewage which also chokes the almost tideless bays.

born in Paris, October 17, 1795, died in that city on the 7th of February last, in his eighty-fifth year. Besides a brilliant military career, in which he reached the position of artillery general of division, he was distinguished as an investigator, chiefly in the field of mechanics. He also possessed executive abilities of a high order, and held for thirty years the directorship of the Conservatoire des Arts et Métiers, which, under his administration, became the leading school for the artisan classes in Paris. He was president of the commission for the first Universal Exposition held in the French capital; in 1862 was elected President of the French Society of Civil Engineers, and has been a member of the French Academy of Sciences since 1843.

pursuing his observations on the influence of the electric light on vegetation, finds that, by its use, the growth and ripening of fruit may be greatly hastened. At a recent meeting of the Royal Society of London, he exhibited two pots of strawberries which had been grown in the usual way until the fruit-buds appeared, when one was exposed to daylight during the day and the electric light at night, the other being left to the influence of ordinary daylight alone. The former, or the one exposed to continuous light, bore a bunch of large, red, fragrant berries, while on the other the berries were still green with the exception of one, that bore a slight red spot.

M. D., F. R. S., the eminent physiologist, died in London, April 11th, at the age of seventy-eight. He graduated in medicine at twenty-one, practiced a short time, and then went to the Continent for the purpose of continuing his studies. Subsequently he returned to Edinburgh, and began to lecture on anatomy; and, five years later (1836) was appointed to the chair of Anatomy and Physiology of the University of London (now University College), which he occupied for thirty-eight years. During this period he became celebrated as a teacher and original investigator, and, though not a. voluminous writer, his contributions have always held a high place in the literature of these departments of science. He was for some years Secretary of the Royal Society, and, from 1840 to 1863, Examiner in Anatomy and Physiology to the University of London.