I.—THE BROOKLYN SUSPENSION BRIDGE.   HEN two large cities stand opposite to one another on the banks of a river, it is not likely they can do very well without a bridge to connect them. Yet the citizens of New York and Brooklyn were obliged to manage as best they could for a good many years before they had their bridge. There were many difficulties in the way. For one thing, the river is very broad; for another, the tall-masted ships... more...