permit the crossing of the valley with the stone embankment. The foundation wall of the aqueduct, amounting to 12,050 cubic yards, and back filling to 10,200 cubic yards, has been executed.

CROTON AQ.UEDUCT. 149

In addition, a large amount of materials has been prpcured for the work, and many items of work performed. Here is a respectable amount of work, considering the time in which it has been performed. Its execution has not only given general satisfaction, as to its permanence and

durability, through the mechanical operations of combining the various materials into a whole, but also that the practicability of completing the undertaking in a manner and style that will be an ornament to our country, and of the highest credit to the public spirit of the City of New York, and its corporate representatives, from whom the project emanated and has received a uniform support, is now beyond a doubt. A very small number of our citizens, comparatively, have any idea of the magnitude of the work and its progress the immense amount of mere manual labor which has been, and ;

is to be performed, in excavating and tunnelling through an almost impenetrable rock, or of mechanical labor in preparing materials, and in the erection of the bridges, culverts, stone and foundation walls, together with the aqueduct for conveying the water to the city, and other erections of a permanent and durable character, to attempt a description of which, by words, is out of the question they must be seen to be properly understood and the ; ;