Our neighbors in the Dominion of Canada have been active of late years in developing their resources. The completion of the Canadian Pacific Railway has opened a large fertile territory for settlement, and the railway itself promises to become a route for international traffic in serious rivalry with the transcontinental roads in the United States. Projects have also been formed for a short rail connection to Hudson's Bay, with a view to shipments during the summer direct to Europe--but there seems to be reasonable question of the practicability of such a route. During the past two seasons Canada has also been engaged upon extensive explorations in the Northwest territory, along the boundary line of Alaska. The parties, I learn, are only just returning from their last summer's labors, and it will probably be some time in the winter before we can supplement the chapter of a year ago from this interesting region. But little advance has been made during late years in solving the mysteries of the Arctic. In the past summer a party has crossed the southern part of Greenland, but advices have not yet come to hand that would indicate the value of the exploration. A second party was organized to follow the east coast of Greenland to the northward, that we may hear from at a later date, although reports already received, if true, would indicate the effort had been baffled by adverse weather. A few months ago an expedition was seriously contemplated by Europeans to the frozen seas of the Antarctic. As it was to have been backed by energetic business men it doubtless would have been amply fitted for its purpose, and we may, therefore, sincerely regret the rumor that the project has been postponed--if not abandoned. In the Central American States a Congress has been assembled to consider the unification of the States under one general government--a union, the possibility of which has long been discussed, but from the jealousy of rival factions has heretofore seemed impossible of accomplishment; but there is some hope that the labors of the Congress now in session will prove more successful.