explained, and illustrated by 17 plates, besides a vertical section, of which last our Cut is a copy. Perhaps these details would tire the general reader, and on that account we do not press them: a few of them, however, may be noticed still further.

Of these, the Bowls appear to be the most attractive. One on the first piece, by fire was a little glass bowl filled with clear water. This bowl was about three inches diameter, placed in the middle of another sphere, about six inches diameter, consisting of several iron rings or circles, representing the hour circles in the heavens. The hour was known by applying the hand to these circles when the sun shone, when that circle where you felt the hand burnt by the sunbeams passing through the bowl filled with water, showed the true hour, according to the verse beneath it: