[138] In a statement prepared by Mr. Boulton for the consideration of the arbitrators between himself and Fothergill as to the affairs of that firm, the following passage occurs:--“The first engine that was erected at Soho I purchased of Mr. Watt and Dr. Roebuck. The cylinder was cast of solid grain tin, which engine, with the boiler, the valves, the condenser, and the pumps, were all sent from Scotland to Soho. This engine was erected for the use of the Soho manufactory, and for the purpose of making experiments upon by Mr. Watt, who occupied two years of his time at Soho with that object: and lived there at Mr. Boulton’s expense. Nevertheless Mr. Watt often assisted Boulton and Fothergill in anything in his power, and made one journey to London upon their business, when he worked at adjusting and marking weights manufactured by Boulton and Fothergill.” In another statement of a similar kind, Mr. Boulton says,--“The only fire-engine that was erected at Soho prior to Boulton and Watt obtaining the Act of Parliament, was entirely made and erected in Scotland, and was removed here by sea, being a part of my bargain with Roebuck. All that were afterwards erected were for persons that ordered them, and were at the expense of erecting them.”--Boulton MSS. The materials brought from Kinneil were accordingly put together with as little delay as possible; and, thanks to the greater skill of the workmen who assisted in its erection, the engine, when finished, worked in a more satisfactory manner than it had ever done before. In November, 1774, Watt wrote Dr. Roebuck, informing him of the success of his trials; on which the Dr. expressed his surprise that the engine should have worked at all, “considering the slightness of the materials and its long exposure to the injuries of the weather.” Watt also wrote to his father at Greenock. “The business I am here about has turned out rather successful; that is to say, the fire-engine I have invented is now going, and answers much better than any other that has yet been made; and I expect that the invention will be very beneficial to me.”[139] Such was Watt’s modest announcement of the successful working of the engine on which such great results depended. [139] Quoted in Muirhead’s ‘Mechanical Inventions of James Watt,’ ii. 79.