8. Know how to mark a trail. 9. Tell what to do to make water safe for drinking if there is any question as to its purity. REFERENCES: "Campward Ho!" A Manual for Girl Scout Camps, National Headquarters, Girl Scouts, Inc. "Camping and Woodcraft," Horace Kephart, Macmillan. "On the Trail," L. Beard, Scribner. "Vacation Camps for Girls," Jeannette Marks, D. Appleton. [Illustration: ROCK TAPPER[9] SYMBOL--PICK AND SHOVEL] 1. Collect and correctly identify ten rocks found among the glacial boulders. 2. Make photograph or make sketch of glacial boulders. 3. Collect two or three scratched glaciated pebbles or cobblestones in the drift. 4. Make a sketch or photograph of an exposed section of glaciated or scratched bed-rock and note as accurately as you can the direction of the scratches or grooves. REFERENCES: "The Story of Our Continent," N. S. Shaler, Ginn and Co. "The Great Ice Age and Its Relation to the Antiquity of Man," D. Appleton and Co. "A Text Book of Geology," portion of Chapter XXV entitled "The Glacial Epoch in North America,"--D. Appleton and Co. "Physiography for High School," Chapter V entitled, "The Work of Snow and Ice," Henry Holt and Co. "An Introduction to Physical Geography," Chapter VI entitled, "Glaciers," D. Appleton, or any other good text-book of geology or physical geography. "Travels in Alaska," John Muir. [Illustration: SAILOR*** SYMBOL--ANCHOR] Qualify for questions under A, one to eleven, and one other test on rowboat, sailboat, canoe or motor boat. A. GENERAL 1. Swim twenty-five yards with clothes and shoes on, or hold the swimming merit badge. 2. Know sixteen points of the compass. 3. Find any one of the four cardinal points of the compass by sun or stars. 4. Know the rules for right of way. 5. Know how to counteract the effect of current, tide and wind. 6. Demonstrate making a landing, coming along side, making fast, pushing off. 7. What is a calm? What is a squall? What are the sky and water conditions that denote the approach of the latter? 8. Why are squalls dangerous? 9. What are the dangers of moving about or standing in a boat? 10. Tie four knots for use in handling a boat. Prepare, tie and throw a life line a distance of 25 feet. 11. Which is the "port" and which the "starboard" side of the boat, and what color lights represent each. B. ROWBOAT. 1. Demonstrate correct way to step into a rowboat, to boat the oars, feather the oars, turn around, row backward, back water, keep a straight course. 2. Name two types of row boats.