JOKES ABOUT HELLGATE.
Occasionally, certain witty editors of New York and Boston engage in little wordy contests in regard to the improvement of Hellgate: a Boston editor will say the widening and deepening of Hellgate will improve the entrance to New York! An editor of Manhattan Island will respond that the widening and deepening of Hellgate improves the road to Boston. Neither seems inclined to admit the existence of as much immorality in his own city as in the abiding-place of the other.
The removal of the rocks that lie in this passage between East River and Long Island Sound has been a subject of great anxiety with merchants of New York, and it seems a little strange that from the time of the settlement of New York until less than thirty years ago, very little had been done towards this work.
MAILLEFERT’S OPERATIONS.
As late as 1845, the channel had not even been surveyed; and it was not until the Office of the Coast Survey was reorganized, in 1847, that a careful examination of this perilous channel was undertaken. The first survey was made under the supervision of Lieutenant (now Rear Admiral) Charles H. Davis, towards the close of 1847. He made his report in February of the following year, giving a careful description of the rocks and currents of Hellgate, and suggesting a plan for the removal of the most serious obstructions. Nothing was done until the following year, when a new survey was made. A map was published, and in March, 1851, steps were taken to remove certain small but dangerous rocks by the process of blasting. The engineer in charge of this work was a Frenchman named Maillefert; he proposed to remove the rocks by exploding charges of powder against them.
The plan dispensed altogether with the slow and difficult process of drilling; he exploded his powder directly upon the rock, on the theory that the pressure of the water above the gas formed by the burning powder, would offer sufficient resistance to throw considerable force against the rock. His first blast was made on Pot Rock, and removed about four feet from its highest point. The plan was successful as long as the rocks were in a state of projection; but after these projections had been removed, and the explosions were made against a solid flat surface, they failed almost completely.
After this French engineer ended his operations, new surveys were made, and it was found that the channel, though greatly improved, was far from complete or satisfactory. Other surveys followed, and various plans were proposed; but the breaking out of the war for a time put a stop to the labors. In 1866 Brevet Major General Newton was sent by the War Department to examine the obstructions of Hellgate, and to arrange for their removal. In the following year he made his report, giving estimates of the time and money required to make a safe and easy passage-way for ships of all sizes: he proposed to remove, by blasting, the obstructions known as Pot Rock, Frying Pan, Way’s Reef, Shell Drake, Heeltap Rock, Negro Point, Scaly Rock, Hallett’s Point, and certain other rocks of smaller size.
He estimated that the channel could be made an average depth of twenty-five feet below low-water mark; that the work could be completed in six years, at a cost of about six million dollars.
Another plan included the removal of these rocks and four others in ten years’ time, at a cost of nine millions of dollars; and he presented another plan, by which some of the middle rocks should remain as they were; and the most serious obstruction, known as Hallett’s Point, could be removed in three years, at a cost of three millions.
DANGERS OF HALLETT’S POINT.