120 



HYDROSTATICS. 



force of 1000 g. for every gram of downward pressure at b. 

 If the tube be 2 meters high the downward pressure at E 

 will be 200 g., and the upward pressure exerted on B will 

 be 200 g. x 1000 = 200,000 g. or 200 Kg. 



223. The Hydrostatic Press. The hydrostatic 

 press, often called the Hydraulic, or Bramah's press, acts 

 upon the same principle. It is represented in perspective 

 by Tig. 70 and in section by Fig 71. Instead of the 

 downward pressure produced by the weight of the water 

 in the tube, pressure is produced by the force-pump. In- 

 stead of the two boards and the leather band, a large. 



