| SIR I. NEWTON. | BP. WILKINS. | GR. EASTERN. | |
|---|---|---|---|
| Feet. | Feet. | Feet. | |
| Length between perpendiculars | 515·62 | 547·00 | 680 |
| Breadth | 84·94 | 91·16 | 83 |
| Depth | 51·56 | 54·70 | 60 |
| Keel, or length for tonnage | 464·08 | 492·31 | 630 |
| Tonnage according to old law | 18,231 58–94 | 21,761 50–94 | 23,092 25–94. |
DIVERSITY OF COLORS.
In a very amusing work of the celebrated Goethe, entitled Winkelmann und sein Jahrhundert, it is stated that about fifteen thousand varieties of color are employed by the workers of mosaic in Rome, and that there are fifty shades of each of these varieties, from the deepest to the palest, thus affording seven hundred and fifty thousand tints, which the artist can distinguish with the greatest facility. It might be imagined that with the command of seven hundred and fifty thousand tints of colors, the most varied and beautiful painting could be perfectly imitated; yet this is not the case, for the mosaic-workers find a lack of tints, even amid this astonishing variety.
AEROLITES.
Meteoric stones, in single masses and in showers, have fallen from the atmosphere at various, and in many cases uncertain, periods, throughout the world. The largest of these at present known is in the province of Tucuman, in South America, in the midst of an extensive plain. It weighs thirty thousand pounds. A mass in the Imperial Cabinet in Vienna was brought from Agram, in Croatia, where it fell in 1751. It was seen by the inhabitants while falling from the air, and is said to have appeared like a globe of fire. Professor Pallas, in his travels in Siberia, found a mass on the mountains of Kemir, weighing sixteen hundred and eighty pounds, which the inhabitants told him fell from the sky. About one hundred and fifty miles from Bahia, in Brazil, is a mass of a crystalline texture weighing fourteen thousand pounds. There are also large masses in West Greenland, Mexico, Peru, and South Africa. The specimen in the cabinet at New Haven, weighing three thousand pounds, was brought from Red River in Louisiana. Showers of meteorolites, weighing from a few ounces to twenty pounds, are recorded by observers as having fallen at Ensisheim, in 1492; at Mort, in 1750; at Aire, in 1769; at Juliac, in 1790; at Sienna, in 1794; at Benares, in 1798; at L’Aigle, in 1803; and at St. Germaine, in 1808. One of the most remarkable instances that has occurred in this country under the direct observation of eye-witnesses took place in Fairfield county, Connecticut, in December, 1807, an interesting account of which may be found in vol. vi. American Philosophical Transactions (1809). A similar occurrence happened at Norwich, in the same State, in 1836.
With regard to the extraordinary origin of these aerolites, or meteorolites, it has been incontestably proved to be atmospheric, by eye-witnesses, by the similarity of their composition in all cases, by the fact that though the materials thus mingled—being chiefly native iron, with small proportions of nickel, silex, aluminium, magnesium, and sulphur—are well known, they are never united in the same manner among the productions of the globe; and further, by the fact that they are never projected from terrestrial volcanoes, and that the situations in which they are found are generally isolated and always on the surface of the earth.
It remains, then, for the philosopher to ascertain the source of this interesting portion of nature. The great difficulty of this task is evident from the number and variety of the theories which have been formed respecting it, and their liability to serious objections. Those who hold the opinion that aerolites are formed from substances floating in the atmosphere must resort to the hypothesis that iron, nickel, silex, sulphur, &c. are first rendered volatile, and then synthetically formed into the ponderous stones which fall from above. Professor Silliman remarks of this recourse to atmospheric formation from gaseous ingredients, that it is a crude, unphilosophical conception, inconsistent with known chemical facts, and physically impossible. The theory which refers these aerolites to lunar volcanic origin seems to have more to recommend it. La Place, the illustrious author of the Mécanique Céleste,—the respect due to whose opinion no one will dispute,—maintained that these meteoric stones are expelled violently from the active volcanoes which telescopic research has proved to exist in great numbers on the surface of the moon, and that, passing beyond the limits of the attraction of our satellite, they come within the influence of the earth and are drawn towards its surface. It has been calculated that the power required to drive a body beyond the moon’s attraction would be only about four times that with which a ball is expelled from a cannon with the ordinary charge of gunpowder. However rapid a velocity of seven thousand seven hundred and seventy feet per second may seem, it would not require an improbable amount of mechanical force.
Professor Olmsted, the American astronomer, has offered the most satisfactory explanation. He has shown that countless bodies, of comparatively small dimensions, cluster together in vast rings, and revolve, as do the planets, around the sun; that these bodies become visible when the orbit of the earth approaches their orbit; that sometimes they are entangled in our atmosphere, catch fire from their enormous velocity, and fall to the earth as meteoric stones. In this way the shooting stars and meteors are shown to be diminutive planets, which in composition and orbital motion resemble our own earth, and almost fill the planetary space with their countless squadrons.
FATE OF AMERICA’S DISCOVERERS.
It is remarkable how few of the eminent men of the discoverers and conquerors of the New World died in peace. Columbus died broken-hearted; Roldin and Bobadilla were drowned; Ovando was harshly superseded; Las Casas sought refuge in a cowl; Ojeda died in extreme poverty; Enciso was deposed by his own men; Nicuessa perished miserably by the cruelty of his party; Vasco Nunez de Balboa was disgracefully beheaded; Narvaez was imprisoned in a tropical dungeon, and afterwards died of hardship; Cortez was dishonored; Alvarado was destroyed in ambush; Almagro was garroted; Pizarro was murdered, and his four brothers cut off; and there was no end to the assassinations and executions of the secondary chiefs among the energetic and daring adventurers.