Show BORES HOLE THROUGH ROCK swirling action of water and stones in age long struggle forma channel at niagara buffalo N Y after the ice which covered the northern hemisphere dur ing tha glacial epoch had all melted there was left along the northern border ot the united those vast bodies of water now known aa the great lakes at first the flood of wa ter found an outlet down the valley according to those who have made this feature of our country a study but later the flow changed to the mohawk valley and finally to the st lawrence that lordly river of the north thus came about that world famous all niagara whose beauties have delighted admiring thousands each year alace modern methods of travel made it easy of access the descent from queer tunnel at niagara falls lake erie to ontario was steep and aa the rushing water splashed downward over ita new course it began to wear iway the rocks underneath gradual ly a channel was formed which deepened and slowly crept back year by year toward its present position sev eral allea south of the starting point this wearing away process has dons some curious things the accompany ing illustration chows a natural tun nel bored by the water of niagara river which la about 12 miles below the present location of the cataract nothing could more clearly show the retrogression that has taken place various theories are advanced con deeming the why and the wherefore but it Is generally conceded that the tunnel was bored out by the action of water and stones in an age long struggle with opposing forces |