In the fall of 1836, George Buchanan failed. The steamboat which he had built had just received its engine, and the George Buchanan had made one trip to the Chenaux. The whole estate and business was transferred to Messrs. Simpson, Gould & Mettleberger. Mr. Buchanan went to his property on Victoria Island, at the Chats, where he had constructed a slide for the passing of timber, and which proved a lucrative speculation. The old company carried on the business at first briskly, but gradually declined in their operations till 1837 they ceased doing anything in the lumber line. They could get no logs from McNab without paying too dearly for the privilege. Mr. Rogerson, (brother-in-law of Mr. William Fraser, afterwards the esteemed Treasurer of the County of Lanark) still remained at Arnprior collecting the debts due to the Buchanan estate, and winding up the business. This was the state of affairs at Arnprior at the close of 1837.

Towards the end of the year the commissioners gave out the contract of constructing the bridge at Johnson's Rock (Burnstown), to Mr. Duncan McNab (Auchessan), a lumberer, for £200. Mr. McNab set to work with skill and energy. He took into partnership Mr. Duncan Carmichael, and before the first of January, 1838, the new bridge—the long-talked of and disputed structure—was at length completed. This was now the only bridge on the Madawaska: that at Arnprior had been swept away by the spring freshet, and was not rebuilt till many years afterwards, when the Board of Works of the Province erected the White Bridge at Arnprior, further up the stream.

The Laird of McNab was now roused to fury. The repeated and successful acts of opposition to his will and his plans maddened him. The construction of the bridge had roused all his passions, and he resolved to punish the commissioners individually. He selected Mr. Donald Mohr McNaughton as his first victim. This gentleman, now the leader of the settlers in their efforts of resistance, had been, in Scotland, head gamekeeper to Lord Panmure, and was a person of some education and intelligence. In person he was robust, tall and athletic. Measuring 6ft. 4in. in height, he towered above his fellow-settlers in physical height, as well as in physical courage and moral resolution. He had emigrated a few years previously, believing the Laird of McNab to be a gentleman equal to the Earl of Panmure, and settled in the township of McNab. For some years he paid regularly (3 barrels of flour for 200 acres); but when the haughty and overbearing disposition of McNab became apparent in his dispute with the commissioners, and also when he became convinced that the Chief was only an agent of the government, he determined to risk the result, and refused to pay any more rent. McNab could not sue for rent or passage money, as Donald Mohr had come to the country at his own expense, bringing a small capital with him which he partly expended in clearing and improving his farm. He devised another scheme as deep as it was malicious. Procuring the signature of twelve freeholders from Fitzroy and Pakenham to a requisition calling upon Manny Nowlan (since dead), a road-surveyor residing at Carleton Place, to run a road from White Lake to Muskrat Lake, he caused Mr. Nowlan to come to White Lake, (where the Chief had now taken up his permanent residence), in October, 1837, to commence operations.

Having given him full instructions how to run the road, the party started early on the following morning, consisting of two axemen, the Chief and the writer, who was then a youth of fifteen. The road was marked out and surveyed properly till they reached the lot of Donald McNaughton, Sr., which lay adjoining that of his gigantic namesake. Here a divergence was made; they made a turn at right angles, so as to go straight through both lots of the two McNaughtons. The poor old man McNaughton came to the Chief, bonnet in hand, and begged him not to spoil his land. The Laird scornfully laughed at him, and ordered the surveyor to proceed. Nowlan continued his survey till he came to the division line of Donald Mohr's lot. The Chief, seeing things progressing properly, according to his views, returned home. Scarcely, however, had the luckless Manny Nowlan crossed the side-line, when Mr. McNaughton, foaming with rage and just indignation, appeared in sight making gigantic strides towards him. The axemen flew in one direction. Manny Nowlan trembled in his shoes.

"What are you doing here, ha?" exclaimed Big Donald, in the thundering tones of a gorilla.

"Surveying a road," was the reply, "and beware how you oppose me."

"Be off! away from my land! if you come one step further (clapping his hands) I will send you to eternity," roared McNaughton.

Nowlan shook with terror, and fled, and did not recover his equanimity till he was safely housed in the Chief's stone cottage at the lake. The Laird vowed vengeance; the whole terrors of the law were to be invoked. The surveyor was deforced.—Ignorant of the consequences McNaughton had violated the law in defence of his property. The mode to oppose the survey was to appear before the Quarter Sessions. This Big Donald did not know at the time; and if he did, his passion and just indignation got the better of his discretion, and he thus fell into the trap and laid himself open to the Chief's vengeance. Accordingly, at the next meeting of the Quarter Session, Nowlan appeared to pass his road, and go before the Grand Jury. The road was constituted to the very spot where he was stopped, although opposed by Mr. McNaughton. A presentment was made against McNaughton, the usual process was moved for and a bench warrant issued. McNaughton was arrested, and the bailiff left him on the road while he went down, to the cottage to see if the Chief would take bail.

"Do not bring the fellow here," said the Laird, knitting his brows; "I smell the air foul already; let not this house be contaminated by his presence. Take him to McVicar, and give him this letter."