Observers who witnessed from day to day the construction of the great Brooklyn Bridge were often heard to remark, as they looked up with awe from the ferry-boats beneath at the workmen suspended everywhere among the net-work of cables, "Those men look just like spiders in a web." The comparison seemed irresistible, and the writer heard it expressed many times. But how few who gave utterance to the sentiment realized the full significance of the "spider" allusion, or for a moment reflected that the span itself was, in many particulars of its construction, but a parallel of an engineering feat of which the spider was the earliest discoverer. Yet among all the distinguished names engraved upon the memorial tablet upon the stone bridge-tower the spider gets no credit. Day after day and week after week we might have seen, travelling back and forth against the sky, a wheel-shaped messenger reeling off its tiny wire. Night and day it was busy, each trip adding one more strand to the growing cable which was to support the great substructure below. And what was this travelling wheel called? "The carrier," or "traveller," if I remember rightly. Why this obviously intentional slight and discourtesy when every field and wood and copse in the country--indeed, on the globe--showed its living example, and bore its myriadfold witness that the "spider" was the only legitimate and proper designation? In the other most notable suspension-bridge, at Niagara, the time-honored methods of the spider were further and conspicuously recognized, but here again without any courteous engraven acknowledgment on the tablet of fame, so far as I have learned. A kite was flown from the American shore, and reeled out so as to fall upon the Canadian side, and this initial strand was drawn across, and subsequently strengthened by the travelling reel. The ends of the added wires were firmly secured at their anchorage, and the completed cable at length re-enforced by guy-ropes.