Long ago, when I first started my poultry plant, I found a recipe for liquid louse exterminator and a worm powder published in some magazine recommended by Dr. P. T. L. Woods, the great poultry expert. The liquid is easily made, and very cheap. Dissolve crude naphtha flakes in kerosene oil. Mothaline and naphtha camphor are two preparations put up in packages, which can be bought at any drug store, and would do as well as the flakes, if you have any difficulty in getting them. A Boston firm puts up a preparation with aromatic naphthalens and camphor, in packages which cost twenty-five cents, and is very good. One package dissolved in two gallons of kerosene makes a good mixture to spray house, nests and roosts. For the birds themselves, paint the inside of a box with the liquid, and keep a bird in it for from fifteen to twenty minutes. I had a box made with a compartment one foot square, so that we could treat six birds at one time. Near the top of each compartment there is a hole large enough for the bird to put his head through, and outside we put a trough which is slightly raised from the ground, so that the birds can just reach the contents. Fill it with small grain, and they keep busy most of the time, which insures their not being smothered, and their necks passing through the hole prevents the fume of the wash escaping too rapidly. Of course, someone must remain and watch the birds all the time; otherwise there is the danger of the bird pulling its head in and being suffocated. To be sure that the bird is perfectly clean, fumigation should be repeated three times, with an interval of three days after each. If houses are kept clean and all new birds are thoroughly fumigated before they are turned into the flock, it will not be necessary to attack the whole flock more than once or twice a year. Nests for setting hens are always swabbed out with the mixture, and brood coops get a dose once a week. As soon as any hen shows signs of getting broody, she is dredged with powder, which is well rubbed down into the “fluff” of the feathers; then on the tenth and nineteenth days she is again well powdered, and from the time the chicks are a week old she receives a dose of powder once a week as long as she broods them. The recipe for the insect powder is as follows: To one peck of freshly slaked lime add half an ounce of carbolic acid. Mix very thoroughly, and add same quantity, in bulk, of tobacco dust. Another powder recommended by Dr. Woods in the same article, and which I have used very frequently, is made by mixing equal parts of finely-sifted coal ashes and tobacco dust, then moisten the whole with the liquid louse exterminator. Allow it to dry and it is ready for use. When purchasing carbolic acid, ask for ninety per cent. strength, otherwise they are very likely to give you a much weaker preparation, fit only for medical use. THE SITTING HEN AND THE INCUBATOR