The present article, viewed in any other light than as illustrative of the peculiar properties of the great principle with which he was operating, and which he was incessantly investigating, and varying its applications, is altogether incomprehensible. But it was very natural for him to preserve in this simple but striking form the sure signs of greater applications. In the present example, we have no attempt, in this philosophical demonstrative model, to cater to the popular taste, although the fertile genius of the noble inventor could not permit the suggestion to escape his pen that the rise and the fall of the water might be made to operate--shall we say bellows, mills and the like, and cause birds to chirp, and fountains to play? Thus “working some little effect besides its own motion” of soberly ebbing and flowing. But this is a mere parenthetical, gratuitous offer to dash the concealed purpose, and give colour to the supposition that it had no higher design. There is generally something to serve for amusement, or to answer some practical purpose, observable in all the 100 articles, but who could assign the use of two globes, in two vessels of water, causing the same to flow and ebb? Viewed independent of the object here suggested, it bears a most purposeless character; and in no other way than as illustrative of the results of the condensation of steam, set forth in a merely experimental apparatus, can we conceive it possible of receiving either a scientific or any other reasonable explanation. For adjusting the apparatus it would be necessary to fill the troughs or cisterns until the water was level with the perforated false bottom, and next to add as much more water as would be equal to the contents of one globe, when the water altogether would cover the false bottoms. The globes should be heavy enough not to overturn either on the admission of the steam, or the expulsion of steam and air from beneath. While steam is entering, the top spring-valve is kept closed by the float-weight, but when condensation commences, the external pressure performs the same duty; so soon, however, as the rising water has elevated the float to the underside of the spring-valve, its pressure against it and the action of the spring, cause it to open, and then the column of water will at once commence descending. As a matter of detail, the float would require a guide rod, or some similar contrivance to direct and keep its course uniformly under the valve, so as to open it. The whole experiment is one of mere matter of fact and not of excellence. It is simply to develope a principle and not to carry out any express piece of curious workmanship; there is not, therefore, any statement of its possessing surprising qualities, the utmost proposed is “a constant water-flowing and ebbing motion,” without any condition as to degree, quantity, or extent of its effect. This and no more would the apparatus here described demonstrate on its trial.