they use, when they have any, are small pans or saucers filled with melted fat, in which a piece of rag is placed, and furnishes a wick for this primitive light. In 1897 I was given one of these “Betty lights” by a mountain host, to light me to bed. Every boy’s log-house should be supplied with lanterns and candles, but the candles must be stored in tin boxes, otherwise The Brownies Will Eat Them. Brownies are the wild wood-mice and flying-squirrels which will use your house during your absence, and not only eat the candles, but anything else you may leave unprotected. They ate up my soap, and then, for dessert, went to the kitchen and ate up the stove-polish. In small houses you will probably not have stove-polish, or stoves. After the opening in the wall of the cabin for the fireplace is sawed out, you may build up a good, strong wall, on the three outer sides of The Fireplace (Figs. 106 and 107). Build these walls as you did the cabin walls, and fit the ends of the logs neatly against the cabin logs, and put “chunks” in between the logs at the cabin end, to level them. When the walls are as high as the opening in the cabin, you are ready to begin the work of building the inside clay-lining. It will take a considerable quantity of clay to finish your fireplace and chimney, and a rough box, like the mortar-box used by builders, will be found most convenient for mixing the clay. Saw off the ends of some sticks of wood and make some Wooden Hammers, or Mauls, of them, by boring holes through the pieces you have sawed off and putting handles in the holes. These mauls may vary from three to five inches in diameter, and will be found to be the most convenient sort of tool for breaking the dry clay before it is dampened, and they will also be of great service in beating the clay down, for the fireplace and hearth. Make the floor to the fireplace and the hearth by spreading the damp clay over the space and hammering it down until it is hard; add more clay, and beat it until the hearth and fire-floor (Figs. 107 and 108) are level and firm. You may then put on enough water to make the surface slippery, and smooth it off with a trowel made of a shingle and a branch, after the manner of the one shown in the foreground of Fig. 98. [Illustration: FIGS. 101-105.] Next Build Your Clay Walls on the inside, against the log outside walls, and extending to the inside of the cabin wall. Make the clay into the form of bricks and build up the jambs and lining, about one foot thick, to the top of the fireplace, using wet clay for mortar. [Illustration: FIGS. 106 and 107.] For the Chimney split some sticks and make them about one inch wide by one and one-half inch thick, and with clay for mortar build the chimney, log-cabin style (Fig. 106), to the required height, leaving a space between the chimney and outside wall of the house. Plaster it well with clay, especially upon the inside, and be careful to keep it plumb.