102 Mr. Parkes' additional Observations 



at the sugar-house, arid that with which our experiments Mrere 

 tried, was, that a pump and sugar-pan were not attached to 

 odr oil-boiler*." And why were they not? Let us hear what 

 the Solicitor-General said upon this point. " In our appa- 

 ratus," said he, " we have a pump ; there was no pump in 

 this. Mark the importance of that. Will not the pump 

 equalize the temperature ? Certainly. Did it never occur to 

 these gentlemen, full and abounding with science, that the 

 pump might be a material part of this apparatus ? Is it not 

 most extraordinary, that they should never have made an 

 experiment with that part of the apparatus ; but it appears, as if 

 by intention, they had studiously omitted itf." 



They say, however, " there was no other difference in their 

 apparatus, than the want of a pump and a sugar-pan." A more 

 unfounded assertion was surely never made in any book that was 

 designed to direct the judgment of the public. Let us see how 

 this will bear examination. They varied in nothing they say, 

 but in the want of the pump and the sugar-pan. Had they a 

 leaden pipe sixteen feet long, fixed in the top of the oil vessel, 

 to carry off any vapour that might be generated ? Had they 

 a chimney seventy feet high, into which their pipe was con- 

 ducted, to convey away whatever might issue from that pipe, 

 and thus prevent the possibility of danger ? Did their fire-place 

 bear the same proportion to their boiler, as that at the sugar- 

 house did to theirs ? or was it of twice th^ size ? Was their 

 oil vessel fixed, with regard to its distance frorii the fuel, and 

 in other respects like the one at the sugar-house, or was it 

 varied for the sake of producing different effects ? Was there 

 any similarity between a large quantity of oil-vapour collected 

 in an inverted cask, and made to burn when the water had been 

 separated froni it, and a small stream of such vapour issuing 

 from a small leaden tube, sixteen feet long ; even supposing 

 the oil were made hot eiiough to enable the vapour to rise to 

 that height ? 



♦ The Associates' book, p. 2B. 



f See Mr. Giimey's iteport of the Trial, versus the Phoenix Office, p. 445. 



