Prof. Wright, of Cincinnati, who has con tributed for our colums the substance of his able, useful, and instructive lectures on chemistry, is at present prevented from completing the series by severe indisposition. We regret this, and so will all our readers, for his sake and the cause of science. We hope he will soon be restored to health. ' sIt is proposed to build a wire suspension bridge over the river St. Lawrence near Que [ bee, at a height of 162 feet above high water R mark