138 Artificial Seas in Ornamental Landscape. 



as to imitate a sea; with the waters of said pond rising or 

 faUing a certain perpendicular height every six, twelve, or 

 more, hours; at one time filling the bays, surrounding the 

 islands, covering the rocks and sands, and at another time 

 ebbing from them, and so imitating the tide by an alternate 

 flux and reflux, which can be effectually obtained by means of 

 my newly invented self-acting sluice, provided the pond is 

 constantly supplied with a regular run of water, correspond- 

 ing to the dimensions of said pond. 



The sluice is so constructed that it remains shut until the 

 pond is full, or at high-water mark, when it opens of itself 

 and allows the water to decrease, or ebb, to a given depth or 

 level ; at this point the sluice again shuts itself, and causes the 

 water to increase or flow as before, when it again opens itself; 

 and in this manner it continues to act alternately and regularly. 



It would render the above ponds more ornamental and 

 more curious, if, on the stream that feeds them, a reservoir- 

 pond were constructed. This should be of equal dimensions 

 with the under-pond, and at least on a higher level by 2 or 

 S ft. It may be at any distance from the other, or at any 

 height of level; a mile distant or 100 ft. of elevation are 

 equally the same, and would give fine scope for cascades. 



By means of a curious, but very simple, part of my inven- 

 tion, the sluice of the reservoir-pond would have a secret un- 

 der-ground connection with the other sluice, which would 

 cause them to work in concert. When the sluice of the or- 

 namental pond opened to discharge, or ebb, the sluice of the 

 reservoir-pond would shut; this would cause a quicker ebb, 

 and also save water for a quicker flow : when the under 

 sluice shut itself, then the sluice of the reservoir would open 

 and pour its water over a fine cascade into the under-pond, il 

 the situation in point of elevation admitted of such. The 

 whole apparatus is uncommonly simple, and might be easily 

 invented by any ordinary artist; but, as far as I understand, 

 it has never before been suggested, although much has been 

 done and written on the subject of ornamenting gardens, 

 pleasure-grounds, and lawns, by water, therefore I am entitled 

 to the merit of originality in so far as a tide-like motion is 

 obtained. 



Water-ponds so constructed, instead of being only stag- 

 nant pools, as at present, might be made to exhibit every 

 species of pleasing variety, according to the nature of the 

 situation and taste of the proprietor. Ponds of this descrip- 

 tion would be most excellent accompaniments to artificial 

 rockwork ; it would be on the banks of such, that the effects 

 of rockworks would be more naturally grand, having their 



