By practice a Girl Scout should be able to do the following things in the way of judging height, weight and distance: (1) Be able to judge within 25 per cent the following: Height of a tree, house, pole, etc., not exceeding 50 feet. Material, 1, 3, 15, 18, 27, 30, 36, 42 and 56 inches. Diameter of the trunk of a tree, a pole, water pipe or similar object. Distance of 6, 10, 15, 25 and 100 feet. (This is useful in camera work.) (2) Pick out from a miscellaneous assortment bottles of 2, 4, 6 and 8 ounces. Bottles of 1 pint, 1 quart, 1 gallon. Pails, 1 pint, 1 quart, 2 quarts, 1 gallon. (3) Be able without scales to weigh out specified amounts of sugar, flour or other household materials, for example, 1, 5 or 10 pounds. (4) Be able to pick out from an assortment, packages of rice, tea, cornmeal, etc., weighing 1/2, 1, 2, 5 and 10 pounds. (5) Be able to give in the usual measures, either avoirdupois or metric, capacity of the standard teaspoon, tablespoon, teacup. (6) Be able to tell when you have walked a mile in open country. This may be done by using Scout's Pace for 12 minutes, on a fifty walk, fifty run rhythm, or by knowing one's own walking step length. (7) Be able to judge of spaces between distant objects such as the distance between two trees, the width of a road, or a brook, by the triangulation method. USEFUL PERSONAL MEASURES It is sometimes a great convenience to measure a length of ribbon, lace or other goods without the use of a rule or tape measure; but what shall we use in their place? Look at your thumb--how long is it from the end to the first joint? And the middle finger, from the end to the knuckle on the back of the hand? Isn't it nearly four and one-half inches or one-eighth of a yard? That is what the average grown person's finger measures. To get the correct length of your finger, hold the end of a tape line to the end of the finger with the thumb of the same hand, draw the tape measure tight over the bent finger to the knuckle. This is a very useful measure for short lengths.