AUTOMATIC VINEGAR APPARATUS. 



89 



siphon, the longer leg of which passes through the bottom of the 

 vessel and enters the funnel. On the edge of the vessel is a 

 spigot which is connected with the fluid-conduit and so adjusted 

 that within a previously determined space of time the vessel is 

 filled with fluid up to the height indicated by the dotted line. As 

 soon as the fluid reaches that height, the action of the siphon 



Siphon-barrel. 



commences and the content of the vessel runs through the longer 

 leg into the funnel of the sparger until its level is sunk to the 

 edge of the shorter leg. The action of the siphon then ceases 

 until the vessel is again filled up to the line when it recommences 

 and so on. 



The siphon of bent glass tubes being very liable to breakage, 

 it is frequently replaced by the so-called bell-siphon the arrange- 

 ment of which is shown in Fig. 28. It consists of a glass tube 

 which forms the longer leg, of the siphon while a glass cylinder 

 secured to this tube by means of a perforated cork represents the 

 other leg. The action of this siphon is the same as the other. 



In working with automatic apparatus fixed quantities of fluid 

 being at stated intervals introduced, provision for the reception of 



