Two years have nearly passed away since this was written, during which time Mr. Keely has been engaged in perfecting his system for aerial navigation. He has, one by one, overcome all obstacles, and so far gained control, of the mysterious polar current, that he has been able to exhibit on the thirds, or molecular graduation of the propeller of his air-ship, 120 revolutions in a minute; and on the sixths, or atomic graduation, 360 revolutions in a minute. He still has the etheric field to conquer; but those who know how many years he has been making his mistakes stepping-stones in his upward progress, surmounting obstacle after obstacle which would have dismayed a less courageous soul, feel little doubt that he will "make the race," which he has timed for life, and reach the goal a conqueror, notwithstanding he is still so often "handicapped." All those who had the privilege of witnessing Keely's researching experiments, in the spring of 1890, when he first succeeded in raising the metal weight, and who were sufficiently acquainted with the laws of physics to understand the conditions under which the weight was raised, pronounced the force by which it was affected to be an unknown force. Had the weight been but a nail or a feather, lifted under such conditions, physicists know that, after he has gained as perfect control of it as we now have of steam, air-ships weighing thousands of tons can be raised to any height in our atmosphere, and the seemingly untraversable highways of the air opened to commerce. This force is not, like steam or electricity, fraught with danger in certain states to those who use it; for, after the molecular mass of the vessel has been fitted to the conditions required, its control becomes of such a nature that seemingly a star might as soon go astray, and be lost to the universe, as for the aerial ship to meet with an accident, unless its speed was pushed to that point where gravity resumes its control. In fact, Keely asserts that there is no known force so safe to use as the polar terrestrial force, for when the celestial and terrestrial conditions are once set up, they remain for ever; perpetual molecular action the result. In using the word celestial, Keely refers to the air, in the same sense that terrestrial refers to the earth. Wide through the waste of ether, sun and star All linked by harmony, which is the chain That binds to earth the orbs that wheel afar Through the blue fields of Nature's wide domain. Percival. From the New York Home Journal. THE SONG OF THE CARBONS. [22] A weird, sweet melody, faint and far, A humming murmur, a rhythmic ring, Floats down from the tower where the lenses are:-- Can you hear the song which the carbons sing?