[_A pleasant floating Garden._] There appears to be little more invention here than in the contrivance of so much variety, and the selecting of “the stream where it is most rapid,” to give motion to the water-mills to work the bellows for producing the promised music; as well as to raise water high enough to obtain a pressure of it for making the snow. The whole offers one of those raree-show designs in which our great-grandfathers delighted, and the descriptions of which formed the staple of their scientific discussions in polite society. 18. An Artificial Fountain, to be turned like an Hour-glass by a child, in the twinkling of an eye, it[6] holding great quantity[7] of water, and of force sufficient to make snow, ice and thunder, with a[8] chirping and singing of birds, and shewing of several shapes and effects usual to Fountains of pleasure. Footnotes [6] yet--for it. MS. and P. [7] quantities. P. [8] the--for a. MS. and P. [_An Hour-glasse Fountain._] In a MS. among the Marquis’s papers, the foregoing appears to be the invention indicated under the title:--“Fountains of pleasure, with artificial snow or hail, or thunder, and quantity not limited.” [See p. 316.] Kircher, Schottus, and others give descriptions, with engravings of fountains, having the external appearance of the hour-glass. The process of turning may have been facilitated by the machine resting on two central pivots. But it must have been of considerable size to produce an efficient hydraulic pressure engine to give forth snow and ice. The thunder, &c., would depend on plans well understood for producing stage effects, and their introduction here, with the music of birds, &c. [see Article 46.] is similar to other automatic arrangements which were the wonder and delight of that age, and a much later period. In 1755, an engine of peculiar construction, to raise water from an Hungarian mine, was erected by M. Hoel, at Chemnitz, which generated intense cold as the water and air rushed out together, under great columnar pressure, causing the formation of artificial hail, projected with amazing force; the effect being very analogous to the suggestions offered by the present articles, Nos. 17 and 18. 19. A little engine within a Coach, whereby a child may stop it, and secure all persons within it, and the Coachman himself, though the horses be never so unruly[9] in a full career; a child being sufficiently capable to loosen[1] them in what posture soever they should have put themselves, turning never so short; for a child can do it in the twinkling of an eye. Footnotes [9] and running. [1] unloose. P.