In the maîtres de poste Finlay had a transportation agency, which was unexcelled at that period, and by protecting them and confirming to them the exclusive right to provide for passenger travel along the road from Montreal to Quebec, he obtained not only all the ordinary advantages accruing to the public from the operation of this agency, but secured the conveyance of his couriers from stage to stage at half the charge paid by travellers.

Finlay's efforts on behalf of the maîtres de poste were first exerted in the legislative council.[121] He desired to obtain an ordinance defining their duties, and declaring their right to the exclusive privilege of providing horses and vehicles to travellers. Having succeeded in this, he endeavoured to have himself appointed superintendent of the maîtres de poste.

In this he had to encounter the opposition of the governor who, though personally friendly to Finlay, was unwilling to allow himself to be occupied with the matter, while he was engaged with the more important duty of providing for the defence of the country. Finlay was a man of much persistence, and when he found the governor indisposed to give him the appointment, he sought the aid of the postmaster general, to whom he represented that on his control over the maîtres de poste depended his ability to secure the conveyance of the mails at a reasonable charge.[122]

Governor Haldimand resented the pressure thus brought on him, declaring that the postal service of Canada was quite equal, if not superior, to the service in England. Not long afterwards, however, the governor relented so far as to give Finlay a temporary holding of the position he coveted, and when conditions became settled, his appointment was made permanent.[123]

The stoppage of the service to New York made it necessary to provide otherwise for the maintenance of the connection with Great Britain. While navigation was open on the St. Lawrence occasional visits were made to Quebec by war vessels and merchantmen, and all such opportunities to send mails to England were taken advantage of.

With Halifax, also, communication was opened by means of a vessel which ran from Quebec to Tatamagouche, on the straits of Northumberland, from which point the journey to Halifax was an easy overland trip.[124] During the summer, therefore, communication with Great Britain was maintained without special difficulty. When navigation on the St. Lawrence closed, however, and vessels could no longer reach Quebec, the situation was entirely changed.

Haldimand, in a letter to a friend, written in November 1778, bemoans his isolation. He will receive no news whatever, unless the rebels should manage to get into the province, an eventuality he has done his best to prevent by destroying their supplies on lake Champlain. The only possible means of establishing a winter communication with Great Britain was to send couriers by the inland route to Halifax.

At this period and for a long time afterwards, this route presented many difficulties. It was very long, and at certain seasons the natural obstacles in the way of travel were nearly insuperable. The connecting links between the Maritime provinces and Quebec were the portages between the waters running into the St. Lawrence and those running into the St. John river. Of those there were several, but the one which was adopted ran from Notre Dame du Portage, a few miles west of River du Loup, in south-easterly direction until it reached lake Temiscouata.

During the French regime, despatches were not infrequently carried between the governor of Quebec and the governor of Louisburg. The courier, who had despatches from the governor of Quebec for Halifax, would travel on foot over a fair road on the south shore of the St. Lawrence, to the portage between Kamouraska and River du Loup. From this point his course ran over the portage between the St. Lawrence and the St. John river systems.

After a toilsome journey of thirty-seven miles over a country alternating between mountains and swamps, the courier reached lake Temiscouata. Having crossed this lake, he came to the entrance of the Madawaska river, which runs due south until it empties into the St. John river. From this point to fort Howe, the site of the present city of St. John, there was a long river journey of two hundred and twenty-eight miles.