During all this time the elder La Vérendrye had been working at other plans for discovery and for trade in the Far West. In the year 1739, on his return from the first visit to the Mandans, he had sent his son François to build a fort on the Lake of the Prairies, now known as Lake Manitoba. When young La Vérendrye had built this fort, he went farther north to Cedar Lake, near the mouth of the Saskatchewan river, and there built another fort. The purpose was to intercept the trade of the Indians with the English on Hudson Bay. For over half a century the Indians of this region had taken their furs down the rivers leading from Lake Winnipeg to the trading-posts of the Hudson's Bay Company on the shores of the Bay, but now the French intended to offer them a market nearer home and divert to themselves this profitable trade. The first of their new forts was named Fort Dauphin, and the one on Cedar Lake was called Fort Bourbon. {93} Having built Fort Bourbon, François La Vérendrye had ascended the Saskatchewan river as far as the Forks, where the north and south branches of that great river join. Here he met a number of Crees, whom he questioned as to the source of the Saskatchewan. They told him that it came from a great distance, rising among lofty mountains far to the west, and that beyond those mountains they knew of a great lake, as they called it, the water of which was not good to drink. The mountains were of course the Rocky Mountains, and the waters of the great lake which the Crees spoke of were the salt waters of the Pacific ocean. François La Vérendrye had continued his work of building forts. Shortly after building Fort Bourbon, he built Fort Paskoyac, on the Saskatchewan, at a place now known as the Pas, between Cedar Lake and the Forks. It is interesting to know that a railway has just been completed to this place, and that it is to be continued from there to the shores of Hudson Bay. How this modern change would have startled the old fur-traders! Even if they could have dreamed of anything so wonderful as a railway, we can imagine their ridicule of the idea that some day men should travel from the East to the far-off {94} shores of the Saskatchewan in two or three days, a trip which cost them months of wearisome paddling.