506 Mr. R. Phillips on the Electricities of Steam. 



off, were much diminished. Tlfe negative electricity collected 

 from the steam (97.) remained unaltered. 



103. The hole in the bung was again reduced to a circle 

 •4< inch diameter; the distance of the hole from the brass jet 

 of the boiler was r2 inch. When the boiler was opened 

 as usual, the only electrical effect I could certainly recognize 

 was the negative electricity of the steam, which remained just 

 as before. 



104'. It follows, from the foregoing, that it is the steam- 

 cloud, and not the steam, which possesses the large capacity for 

 induction. Indeed as much might have been inferred from 

 the fact discovered by Dr. Faraday, that gaseous bodies have 

 but one, or nearly one inductive capacity. 



105. The glass tube was taken from the fountain, and the 

 brass jet of the fountain was removed from the glass tube, 

 and united to the cock of the fountain so that the stream of 

 water might issue horizontally; the fountain being set on the 

 tripod stand as in former experiments. One end of a stout 

 piece of copper wire was flattened out, and the other end was 

 attached to a glass tube to insulate the copper. The flattened 

 end stood in the path of the jet of water which struck one of 

 the flat surfaces perpendicularly; the distance between the 

 part of the copper which was struck by the water, and the 

 end of the brass jet of the fountain, was 12 inches. The cop- 

 per wire and the fountain both communicated with the single- 

 leaf electrometer. In the experiments to be described, the 

 water should not be discharged from under a much lower 

 pressure than 3 or 4 atmospheres, and a higher pressure is 

 better. 



106. The fountain being now opened and the water con- 

 sequendy dashed against the copper plane, the electrometer 

 was electrified negatively; the charge was feeble, and could 

 scarcely hold the gold-leaf midway between the two plates. 

 The surface of the copper on which the water struck, was 

 cleaned with sand-paper, but the electrical effects did not 

 vary. 



107. The long arm of the tin pipe was placed horizontally 

 with the short arm pointing to the zenith, and without dis- 

 turbing the former arrangement, the long arm of the tin pipe 

 was brought before the jet of the fountain, so that the stream 

 of water might pass axially along it ; and the flattened end of 

 the copper wire occupied about the axis of the shorter limb 

 of the tin pipe. The fountain, the tin pipe and copper wire 

 were united to the single-leaf electrometer. The fountain 

 now being opened, plenty of positive electricity went to the 

 electrometer, which must have been collected by the tin pipe 



