The appalling catastrophy which has spread such awful havoc through the teeming valley of the Conemaugh almost surpasses belief and fairly staggers imagination. Without yet measuring its dire extent, enough is known to rank it as the greatest calamity of the natural elements which this country has ever witnessed. Nothing in our history short of the deadly blight of battle has approached this frightful cataclysm, and no battle, though destroying more life, has ever left such a ghastly trail of horror and devastation. It seems more like one of those terrible convulsions of nature from which we have hitherto been happily spared, but which at rare intervals have swallowed up whole communities in remote South American or oriental lands. Ingenious and masterful as the human intellect is in guiding and controlling the ordinary forces of nature, how impotent and insignificant it appears in the presence of such a transcendent disaster! It is well nigh inconceivable that a great section throbbing with populous towns, and resonant with the hum of industry, should be wiped out in the twinkling of an eye by a mighty, raging torrent, more consuming than fire and more violent than the earthquake. The suddenness of the blow and the impossibility of communicating with the scene add to the terror of the event. The sickening spectacle of ruin and death which will be revealed when the veil of darkness is lifted is left to conjecture. The imagination can scarcely picture the dread realities, and it would be difficult to overdraw the awful features of a calamity which has every element of horror. The River and Lake. Nature is so framed at the fated point for such a disaster that man was called upon for unceasing vigilance. The Conemaugh makes its channel through a narrow valley between high ranges. Numerous streams drain the surrounding mountains into its current. Along its course swarm frequent hamlets busy with the wealth dug from the seams of the earth. The chief of these towns, the seat of an immense industry, lies in a little basin where the gap broadens to take in a converging stream and then immediately narrows again, no outlet save the constricted waterway. High above stands a great lake which is held in check only by an artificial barrier, and which, if once unchained, must pour its resistless torrent through this narrow gorge like a besom of destruction overwhelming everything before it. There were all the elements of an unparalleled disaster. Years of immunity had given a feeling of security for all time without some extraordinary and unexpected occasion. But the occasion appeared when in unforseen force the rains descended and the floods came, and to-day desolation reigns. A Direful Calamity.