424 ANNUAL RECORD OF SCIENCE AND INDUSTRY. 



map of New Jersey will show that the greater part of the 

 coast is bordered by outer beaches, which cut off inlets be- 

 tween them and the main land, and that it is only necessary, 

 according to a statement before us, to make a few sections of 

 actual canal, besides widening and improving certain natural 

 means of communication, to complete the line in question. 

 Should the enterprise be accomplished, and the Cape Cod ca- 

 nal be likewise constructed, a vessel might start at Boston, 

 and pass by an interior line all the way to Delaware Bay. 



The entire route by the proposed line of interior commu- 

 nication from New York to Delaware Bay is said to be about 

 one hundred and twenty-five miles, requiring the construc- 

 tion of only about fifteen or twenty miles of actual canal, to- 

 gether with about fifteen miles of dredging to various depths. 

 One section of canal, five miles in length, would be between 

 the head of Denny's Creek, on the north side of Delaware 

 Bay, and the head of Cedar Swamp Creek, which empties into 

 Tuckahoe River, near the Great Egg Harbor Bay, the entire 

 distance across being about twenty miles, while that around 

 the coast is about sixty. From the head of Barnegat Bay to 

 Squam Inlet, and thence to navigable water near Long Branch, 

 a second line of about fifteen miles would be required. 



WOODEN WATER-PIPES. 



The great cost of iron pipes for conducting water has in- 

 duced an ingenious citizen of Rochester to invent a substi- 

 tute made of wood, which, as is asserted, answers the pur- 

 pose equally well, and at a much lower price. The method 

 of preparation consists in winding thinly-cut wide strips of 

 wood, made continuous by splicing at the ends, upon a long 

 form of the size of pipe required, the form being so construct- 

 ed as to be taken down when the proper number of layers 

 has been applied, thus freeing the pipe from the form. Lat- 

 eral strength is secured by laying the strips, or lamina?, spi- 

 rally in opposite directions. The lamina? are passed, before 

 going on the form, through boiling-hot asphaltum, by which 

 the whole is compacted together, and effectually protected 

 from the destructive action of the elements. The pipe is ex- 

 ceedingly strong, as has been shown by repeated tests, having 

 resisted a cold-water pressure of 275 pounds to the square 

 inch. 



