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Handicrafts 205 every day. With them, it was religion as well as a hygienic performance; and was accompanied by special prayers, also the taking of purgatives. IK IV D 4 Water, or the Indian Well If there is a swamp or pond, but no pure water at hand, you can dig an Indian well in half an hour. This is simply a hole about 18 inches across and down about 6 inches below water-level, a few paces from the pond. Bail it out quickly; let it fill again, bail it a second time, and the third time it fills, it will be full of filtered water, clear of everything except matter actually dissolved. It is now well known that ordinary vegetable matter does not cause disease. All contamination is from animal refuse or excreta, therefore a well of this kind in a truly wild region is as safe as a spring. White Man’s Woodcraft or Measuring Weights and Distance Would you like to tell a dog’s height by its track? Then take the length in inches of his forefoot track, multiply it by eight, and that will give you his height at the shoulder. A little dog has a 2'%-inch foot and stands about eighteen inches ; a sheepdog with a 3-inch track measures twenty-four inches, and a mastiff or any big dog with a 4-inch track gives thirty to thirty-two inches. The dog’s weight, too, can be judged by the track. Multi- ply the width of his forefoot in inches by the length, and multiply that by five and you will have a pretty close esti- mate of his weight in pounds. This, of course, does not apply to freak dogs. IlD2,3 The Height of Trees To get the height of a tree, cut a pole ten feet long. Choos- ing the smoothest ground A, prop the pole some distance from the tree. Lay down so that the eye B is level with the tree base and in line with the top of the pole and the tree. Mark the spot B with a peg and measure the distance from the peg to the foot of the pole, then from the peg to the