BETWEEX the external sensation and the internal perception stands the time-sense, adapted to the distinction and estimation of the succession ; it is really a grosser hearing and sight, for the cochlea and retina do nothing more than distinguish the more or less rapid succession of impressions.
ASK myself if the system of education at present going on in our nation is a system which has a proper relation to the necessities of the nation. I look round me, to see the nation in chaos of thought and action ; in what Mr. Gladstone has correctly defined as social revolution in one part, and mental revolution in all parts ; mental revolution that might, by merest accident, by one or two days’ shortness of food, from failure of foreign supply and panic thereupon, pass, after a few years of further chaos, into physical revolution.
LATE FELLOW IN PHYSICS OF TIIE JOHNS HOPKINS UNIVERSITY.
IN the construction of a building in which large numbers of people are to be gathered together to listen to music or speaking, it is highly important to consider the conditions which shall best allow the sound to be carried from the musician or speaker to all of the hearers.
THE virtual triumph of the antiseptic system of surgery, based as that system is on the recognition of living contagia as the agents of putrefaction, is of good augury as regards the receptivity of the public mind to new views respecting the nature of contagia generally.
THERE are really privileged persons within the scientific domain. M. Gaston Plante, whose name is associated with a most important advance in electrical knowledge, enjoyed the opportunity, in 1855, of making, in a wholly different direction, a discovery in paleontology that was of great interest.
WHAT a vast difference there is between us and our ancestors who lived three thousand years ago ! What savages they were ! What a polished people are we ! Surrounded by all the glories and lights, blessings and hopes of civilization, we can hardly realize the fact that we are the descendants of men who roamed in forests and deserts, of men as ignorant, superstitious, wild, and brutal as the Comanche Indians.
THE interest which attaches to the modern representatives of the mammoth host is by no means limited to the zoological world, but extends throughout all classes of society, who find something to wTonder at even in the huge proportions and ungainly ways of the elephant family.
THE annual consumption of sugar by the people of the United States amounts to more than forty pounds per capitum. This gives as a total the enormous quantity of two billion pounds per annum. The cost of this commodity may be safely placed at eight cents a pound. The total value of the sugar consumed each year, therefore, is one hundred and sixty million dollars. Sugar is a theme of general and pecuniary interest, which is a suflicient excuse for an article on its chemistry.
TRANSCENDENTAL geometry is the geometry of solids and surfaces in n-dimensional or in curved space. Exactly what surfaces and what solids is a hard question to answer, and the answer is still harder to understand. Let us, then, first find out in what way or ways the science of transcendental geometry arose.
ASPIDER, sitting placidly on a hat-peg, awakened in me a vague enthusiasm for natural history ; so I captured him, and put him in a bottle. He was lean and gaunt, and had an ominous countenance. The small row of eyes on the vertex of his head looked murder and rapine, and the formidable jaws—which he moved slowly, as if he were sucking his teeth—meant death to those who were his inferiors in strength.
WITH so many professors of the art of rejuvenation proclaiming their readiness to turn old faces into new ones, smooth out wrinkles, obliterate crow’s-feet, and restore the hair to its original abundance and color, the putting of young heads upon old shoulders should be easy enough ; but the proverbial impossibility of putting old heads upon young shoulders still seems to hold, although the feat has sometimes been accomplished by Nature herself.
THE destruction and decomposition of organic substances, both animal and vegetable, are promoted by the lower fungoids, particularly by yeast-plants and molds, which we may for brevity call rots. During life, that is, as long as a lively circulation is kept up, plants are protected against the attack of these ever-present organisms, but during the periods of rest, when the life-activity of the plant is reduced to a minimum, defense by the vegetative process is suspended.
THE name Thibet, as we call that highland, the natural isolation of which gives it a unique position in the world, is not known among the people who inhabit it. The Thibetans call their country Bod, or Bod-yirl ; the inhabitants of the northern slopes near the great desert call it Tungut ; the Chinese, Si-fan.
BARON NORDENSKIÖLD has heen styled by Germans the Vasco de Gama of our century. His work is solid and original enough to stand by itself, and need not be compared or contrasted with that of any other. The careful, systematic pursuit of a wellformed purpose, with the full benefit of the experience of past navigators, with a well-defined idea of what was expected to be accomplished, and of how it was to be done, with scientific foresight displayed at every step, can not with justice to either be weighed in the same scale with the bold achievements of the hardy adventurers of former centuries who, starting without the aid of any of the knowledge which has now been accumulated, and without definite notions of where they should go or what they would find, discovered what the fortunes of the wind and the weaves brought in their way.
Says “Blackwood’s Magazine”: “The man who first suggested an electric telegraph, in a letter to the ‘ Scots Magazine ’ in the year 1745, Charles Marshall, was looked on as having dealings with the Evil One, and had to leave his native country and go to America. When Ronalds, about the year 1817, laid his plans for an electric telegraph before the English Government, they would not even take the trouble to investigate the matter. An under secretary, in the usual official style, wrote him that he was 'directed by his Majesty’s Secretary of State, etc.,
MAGAZIMES are of two kinds : the entertaining kind, which cater to mental laziness, and can be skimmed over without mental effort; and the instructive kind, which contain articles that must be read twice. “ The Popular Science Monthly,” from the start, has furnished a considerable proportion of articles so weighted with valuable thought as to require concentration of mind and often careful reperusal to grasp and assimilate their contents.
WHEN, some ten years ago, the author of this work was solicited to contribute a volume to the “ International Scientific Series,” he cordially consented, on the condition that he might take his time. Nothing could be more reasonable, for Sir John is a very busy man, and occupied by many duties.
The Great Telescope at Prineetcn.—The new telescope for the Ilalsted Observatory at Princeton has been mounted within the past few weeks, and is now ready for work. In magnitude it ranks at present as fourth among the great refracting telescopes of the world, and second in the United States.
DR. BYRON D. HALSTEAD, of the “ American Agriculturist,” has published, in the report of the Secretary of the Connecticut Board of Agriculture, an important memoir on “ Fungi injurious to Vegetation, with Remedies.” In it he describes ergot, the potato-rot, the rust of wheat, corn-smut, the onion-smut, the apple-leaf fungus, the peach-curl fungus, the American grape-mildew, the lettuce-mildew, and the raspberry fungus.