PENITENTIARY. 



the 30th, for showing me some of the sights 

 of Philadelphia, called accordingly, and we 

 drove first to the water-works, a stupendous 

 achievement of art and labour, by which a 

 great body of water from the Schuylkill river 

 is forced by the power of three immense wheels, 

 driven by the current, to the summit of a hill 

 overtopping the highest houses, and is there 

 received into three large reservoirs, out of 

 which, by means of pipes, it is plentifully dis- 

 tributed over the city, at a moderate charge to 

 the inhabitants. The sight of this gigantic 

 work so indicative of great ingenuity and en- 

 terprize filled me with astonishment. 



We next drove to the Penitentiary or State- 

 prison, a great and admirable establishment, 

 containing separate cells and airing-yards for 

 500 prisoners, arranged so as to be all within 

 view from a hall in the centre, but so also that 

 one prisoner is not within sight of hearing of 

 another. 



The principle of this establishment is soli- 

 tary confinement, and every prisoner is sup- 

 plied with work such as he can perform, and if 



