152

TESTIMONIALS.

of explaining the same, being theessential oil from the non-conduc-tor ; and proving, that howeverdiscolored, no injury is derivedfrom the same. At the close ofthese experiments, Mr. Wendonmade a short address to thebody of persons present, thank-ing the Mayor for his kindattendance and impartial atten-tion ; to which his worship re-plied, expressing his extremesatisfaction at the whole pro-ceedings, and heartily wishingso good an invention its deservedsupport.”

This is a very cleveridea of Mr. Wendon’s,which shews his wantof knowledge as to theproperties of wood andessential oil. What isthe difference betweenthe stain of essential oiland a veritable singe?What is the distinctivename of this essentialoil? Naptha is distilledfrom wood by its total

destruction. Essential orvolatile oils require a temperature, to raise themto a state of vapour, of 212°, which is in this casesaid to have been produced, and “ discolored thecovers of one or two papers.” Yet it does notappear that the bitumen which melts at the sametemperature (212°) did so.*

" London and Birmingham Railway Office,

“ Euston Square, April 8tli, 1844.

“ Sirs,—I am instructed to send the enclosed report of theresults of the public experiment on your Fire -proof Boxes andSafes at the Camden station of this Company, which was autho-rised by the Directors to be made under the immediate super-intendence of their own officers, and to congratulate you onthe complete success of the very severe trials by which youhave allowed your admirable invention to be tested.

“ I am, Sir, your obedient servant,

“ B. CBEED, Secretary.”

“ To Messrs. Milner and Son.”

See Ure’s Dictionary of Arts, Manufactures, and Mines, 4th edition, 1853.