In some parts of Canada, where suitable stone cannot readily be procured, iron or wood has been substituted. At Quebec and Montreal, castings of iron, in the shape of Curling Stones, are played with--the intensity of the cold there, rendering the stones liable to break on striking against one another. Iron is used also by the Curlers of Dundas, in the Gore District; and at Guelph, where the Game has some ardent admirers, they play with blocks of hard wood. At Toronto, and the Curling localities in the neighborhood, stones only have been used; part having been imported from Scotland, and others having been made by the stone-cutter to the Club, from blocks of excellent quality picked up by him on the land in the vicinity. Several of the stones imported to Toronto have been made from Ailsa Craig, which, it appears, has long been known as an excellent material for the purpose; one of those now referred to having been played with by the father of the present owner, at least sixty years ago. * * * * * THE RINK.--The ice on which the game is played is called the Rink. This should be a sheet of fifty yards in length and four yards in width; perfectly free from every inequality. At the distance of four yards from each end of the rink, and in the middle crosswise, a circular hole is made, about an inch in diameter and the same in depth, called the "tee." Round the tee two or more circular lines are drawn, the largest having a diameter of about five feet, the others smaller and at intermediate distances. The space within the largest circle is called the "brough." The use of the circular lines is to shew, while the game is being played, the comparative nearness of the stones to the tee; actual measurement not being allowed until all the stones have been played to one end of the rink. A line is also drawn across the tee, at right angles with the rink lengthwise, and extending to the outermost circle, the use of which will be shewn in the remarks relating to sweeping. At the distance of seven yards from each of the tees a line is drawn across the rink, called the "hog-score," and stones which on being played do not pass this score are called "hogs" and lose for that time the chance of counting, being distanced or thrown off the rink. * * * * *