1. _Preparation of foundation._--This consisted in placing a mass of
Portland cement concrete beneath the existing foundation, extending
downwards 131/2 feet; underneath and within the outer edge of the old
foundation 18 feet; and without this edge 23 feet; then, of taking out
the old foundation from beneath the shaft, for a sufficient distance
back to obtain a good bearing upon the new masonry which is built out
upon the slab first mentioned.
This work is so far advanced that it will be entirely completed by the
15th of June.
2. _Preparation for the shaft._--The other operations have consisted in
the erection of the interior frame-work for the staircases and elevator
within the shaft, which frame-work will be used in the construction of
the masonry; the collection of granite and marble for continuing the
shaft; and the preparation of the machinery for raising the stones to
the top of the shaft, and setting them in place on the walls.