HOW ANCIENT TEMPLES AND PYRAMIDS WERE BUILT.—This is beyond modern conjecture, so imperfect is our understanding of the extent of the mechanical knowledge of the ancients. Their appliances are believed to have been of the simplest order, and their implements exceedingly crude, and yet they were able to convey these enormous blocks of stones for vast distances, over routes most difficult, and having accomplished this, to raise them to great height, and fit them in place without the aid of either cement or mortar to cover up the errors of the stonecutter. How all this was done is one of the enigmas of modern science. It has been generally believed that inclined planes of earth were used to enable the workmen to raise the huge stones to their places, the earth being cleared away afterward. But it is possible that the ancients had a more extended knowledge of mechanical powers than we usually give them credit for, and that they made use of machinery very like that employed by moderns for lifting great weights. Large cavities are found in some of the stones in the pyramids, which may have been worn by the foot of a derrick turning in them. That there were enormous numbers of men employed in the building of these ancient structures is well known; these results of their great aggregated strength we see, but they left no record of the means by which this strength was focused and brought most effectually to bear on their mighty tasks.
THE FIRST ATLANTIC CABLE.—As early as 1842 Professor Morse declared a submarine cable connection between America and Europe to be among the possibilities, but no attempt toward this great achievement was made until 1854, when Cyrus Field established a company, which secured the right of landing cables in Newfoundland for fifty years. In 1858 soundings between Ireland and Newfoundland were completed, showing a maximum depth of 4,400 meters. Having succeeded in laying a cable between Nova Scotia and Newfoundland, Mr. Field secured the co-operation of English capitalists in his enterprise. The laying of the cable was begun August 7, 1857, from the port of Valencia, Ireland, but on the third day it broke, and the expedition had to return. Early in the following year another attempt was made. The cable was laid from both ends at the same time, was joined in mid-ocean, but in lowering it was broken. Again, in the same