486 



THE CENTURY, 



Savery says : u So that 

 P, No. l,is by the ex 

 ternal pressure of the 

 atmosphere, immediate 

 ly refilled, while P, No. 

 2, is emptying; which 

 being done, you push the 

 handle of the regulator 

 from you, and throw the 

 force onP, No. 1, pulling 

 the condensing pipe over 

 P, No. 2, causing the 

 steam in that vessel to 

 condense, so that it fills 

 while the other empties. 

 The labour of turning 

 these two parts of the 

 engine, viz. the regula 

 tor and water-cock, and 

 tending the fire, being no 

 more that what a boy s 

 strength can perform for 

 a day together * * * 

 yet, after all, I would 

 have men. * * * 



We do not purpose to press any charge against 

 Savery, but simply to relate what is on record respect 

 ing the engine he put forward ; and to notice here the 

 remarkable coincidence between his description, and 

 that given by the Marquis 32 years before. The 

 Marquis writes in the singular number of &quot; the fire&quot; 

 thereby indicating a single furnace ; and in Savery s 

 first drawing we find the model represented with one 

 furnace. Then in &quot; The Miners Friend,&quot; we have parts 



ter says : &quot; A man that 

 tends the work is but to 

 turn two cocks, that one 

 vessel of water being con 

 sumed, another begins to 

 force and refil with cold 

 water, and so succes 

 sively, the fire being 

 tended and kept con 

 stant, which the self 

 same person may like 

 wise abundantly perform 

 between the necessity of 

 turning the said cocks.&quot; 



And in No. 100, he says, 

 &quot; a child s force br mgetli 

 up an hundred feet high, 

 an incredible quantity of 

 water.&quot; 



