c ) 
Let us now fuppofe fuch a Refervoir Fig. 5.IKKL, 
with acondantly running Stream W, and an Out-let X, to 
receive the Water of a Syphon S T V, coming through 
two Refervoirs A BCD andEFGH, as before de- 
fcribed. A Fountain derived from X in this Cafe, 
would be an intermitting Reciprocating-Spring, whofe 
Stream would reciprocate, but whofe Reciprocations 
would fometimCs flop, and have Fits of Intermillion. 
Such, in all probability, is the Fountain called 
Layvueli, before defcribed, whofe Phenomena gave 
occafion to thefe Thoughts, and feera capable of being 
accounted for by fuch a Contrivance. And for the 
better Difcovery of the Nature of this Fountain, whe- 
ther it is owing to fuch a Piece of Natural Machinery, 
or otherwife, it would be proper to bbferve the length 
of Time of each Increafe, Decreafe, and Paufe in every 
Reciprocation, together with the Number of Recipro- 
cations in every Reciprocating-Fit, and like wife the 
length of the Intermillions of the faid Fits. Thele 
Obfervations (houldbe continued for fome Time, both 
in a fettled Seafon, when the Feeding-Stream at O 
cannot change, and in Variety of Seafons, when the 
faid Stream may be altered. 
Having now brought rhefe Thoughts to the End 
propofed, viz. an Explanation of fuch a Fountain as 
Lay vo ell, I lhail carry them no farther ; but conclude, 
by prefenting to the View of the Society, an artificial 
Fountain of this kind, Fig. y. which being very ealily 
made, may be buried in the Bottom or Slope of a 
Terrafs, where a conftant Stream of Water can be 
brought, and will furnilh us with a new fort of Wa- 
ter-Works in Gardens.- The two. Refervoirs A B C D, 
E F G H, with their Syphons MNP, ST V, and the 
V'- o T t'r j third 
