the engraving. 



50 DESCRIPTION OF A WATER WHEEL. 



Tried withfuc- Repeated experiments of the above invention were made 



eefs by the So- i ,r /-> . 



ciety. ty tne Committee ; from the refult of which it appeared to 



poflefs fome advantages over the common wheel, and to have 



a greater power of aftion. 



Defcription of the late Mr. Be/ant's Water-wheel. Plate III. 

 Fig. 1 & 2. 



?h!Vil?™J? A ' The hod y of the water-wheel, which is hollow in the 

 form of a drum, and is fo conflru&ed as to be proof againft 

 the admiflion of water within it. 



B. The axis on which it turns. 



C. The float boards, placed on the periphery of the wheel. 

 Each board is obliquely fixed firm to the rim of it* and to the 

 body of the drum. 



D. The refervoir, containing the water. 



E. The penftock, which regulates the quantity of water 

 running to the wheel. 



F. The current of water which has pafled the wheel. 

 Fig. 2. Is a front view of the water-wheel, fhewing the 



oblique direction in which the float boards C are placed on the 

 face of the wheel. 



XI. 



Defcription of an Hydrometer ivhich gives the Specific Gravity by 

 Inflection, conftm&ed by Mr. At kin*. — W. N. 



Improvements OINCE the publication of the defcription of Atkins's hydro- 



hydromet^r. meter m tne kft Number, that artiit has communicated to me 



The weights of two improvements in the fame. The firft confifts in making 



different figures. fa e f our we ights of different figures, namely, round, fquare, 



triangular, and pentagonal ; and he ftamps the figure of the 



weight on the Aiding rule, oppofite to every letter in the feries 



to which it belongs. By this contrivance, which indicates a 



considerable degree of fagacity with regard to the practical 



requifites of an inftrument offered for general ufe, he renders 



it impoffible for the revenue officer to miftake one weight for 



another, or to take out his refult at a wrong part of the Hiding 



rule. 



The 



