I. AN INTRODUCTORY VIEW.

If we broadly define civil engineering as the art of construction, then the birth of the art is as old as the emergence of man from savagery. The savage who hollows out a log of wood in order to construct a canoe has taken the first step in the art of shipbuilding; and when he has constructed a hut, however rude, to take the place, as an abode, of the cave hollowed out by nature, he has moved one step nearer to those triumphs of building construction which satisfy man’s necessities, comforts, and æsthetic desires. From this standpoint civil engineering is as old as the oldest of the arts and sciences. Not only is civil engineering an ancient art, but when the archæologist points to some of the masterpieces of building construction which have been literally hidden from view by the débris of centuries, and describes the old roads which the disintegrating forces of nature, working for centuries, have not been able to destroy, it is natural to assume that in many features the civil engineering of the present day is but a copy of ancient work, or, at least, that there has been comparatively little real progress. It may be claimed that bridges are very old, that canals, lighthouses, and roads antedate the Christian era, and that even the ancient Egyptians knew that the earth is round, and had made a rough computation of its diameter. But it will be shown that even in these cases there has been an enormous advance, not only in the character and magnitude of the work done, but also in another feature of civil engineering which is frequently overlooked, namely, the economy of labor and material. Civil engineering has been defined as the art of doing well with one dollar what any bungler can do somehow with two dollars. This definition, although very loose and one-sided, nevertheless contains a very important truth. If by improved methods a canal or a bridge can be constructed for one half to one third of what it would have cost by older methods, then the world has advanced, in that it may have two or three canals or bridges at the same cost of labor as would have been previously required for the construction of one. When we add to this a vast improvement in quality, an improvement that would have been previously impossible at any cost, the world’s advance is hardly measurable by any standard. It is a well-known fact that many engineering works, justly considered masterpieces at the time of their construction, could now be replaced by a much better structure for a comparatively small part of their original cost. This statement not only applies to very old constructions, but even to some of the great engineering works of the latter half of this century. Some of these reconstructions have actually occurred, as is illustrated in the Victoria tubular bridge at Montreal, or the Roebling suspension bridge at Niagara Falls,—described later. In fact, the progress in civil engineering during the nineteenth century is chiefly made up of the enormous advances which have been made during the latter half of the century. It should not be argued that these recent constructions are cheaper, because “everything is cheaper now.” The general scale of wages has advanced, and the total cost of construction is cheaper, only because improved methods of work have reduced the labor required to produce finished building material from the raw product and to erect that material into a structure. Therefore in considering in detail the construction of the great masterpieces of this century, we should not lose sight of the enormous advance in general methods of work, which has rendered it possible to have all of these structures which so minister to the prosperity of the world, at such a reduced cost in labor.

A complete discussion of the century’s progress in civil engineering would require a treatise on all modern practice as well as a description of nearly all of the great engineering masterpieces in existence, but the limitations of this article utterly preclude the possibility of even a short discussion of all the branches of the science, to say nothing of a detailed description of all of the examples. The following discussion will therefore be confined to those branches in which the advance has been most notable, even to the unscientific reader, the progress being illustrated by brief statements regarding the most typical constructions.