Reports of Judges. 65 



ing the very highest consideration of the honorable board of mana- 

 gers, in view of its great value and merit for the purposes intended, 

 and as a proper recognition of this invention, we recommend your 

 honorable board to award it the highest honor. 



WM. W. W. WOOD. 



A. H. SMITH. 



JAMES HOW. 



C. H. HALL'S WATER ELEVATING APPARATUS. 



To the Board of Managers : 



Gentlemen. — After a full and impartial examination of the above 

 named apparatus, the undersigned judges make report that this is a 

 machine for raising water (termed a Pulsometer), by the force of 

 steam acting directly upon it, and belongs to a class heretofore known 

 as steam or vacuum pumps ; since the experiment of De Caus, in 

 France, about the year 1615 in this direction, many eminent engi- 

 neers and others have spent much time (both in this country and in 

 Europe) in inventing and perfecting a vacuum pump to work continu- 

 ously, raising its own water by vacuum, discharging it by direct steam 

 pressure, so as to keep up a uniform motion or steady delivery. 



This has never before been done successfully ; the manner in which 

 Mr. Hall applies the steam, the mode of condensing it and the method 

 of operating the valves (automatic), we believe to be new. And we 

 are of the opinion this pump will be of great value to the mining 

 and manufacturing interests of the country, in view of its simplicity 

 and adaptation to the many purposes for which it can be used. 



We are requested by the inventor to restrict this report to the 

 brief description above given referring to the construction and 

 method of operation of this apparatus, in view of giving no further 

 publicity to the points embracing the essential features of his inven- 

 tion, until his patents therefor are issued. 



We recommend this invention to your honorable board as one of 

 great merit, destined to supersede many of the machines and more 

 expensive methods heretofore used for raising fluids within the limits 

 to which the Pulsometer is especially adapted. 



WM. W. W. WOOD. 

 A. H. SMITH. 

 JAMES HOW. 



[L\ST.] 5 



