This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 Excerpt: ...the instructor. Is the water capacity the same for all soils? Which holds the most? Which the least? Record results as follows: Exercise 46. Soil Solutions. Object: To determine whether water in passing through the soil dissolves mineral substances. Evaporating dishes Runsen burner Well water Rain water Apparatus Slips ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 Excerpt: ...the instructor. Is the water capacity the same for all soils? Which holds the most? Which the least? Record results as follows: Exercise 46. Soil Solutions. Object: To determine whether water in passing through the soil dissolves mineral substances. Evaporating dishes Runsen burner Well water Rain water Apparatus Slips of Wandering Jew Flasks Ring stand Directions: A. Place 50 c.c. of well water in one evaporating dish and the same amount of rain water, or distilled water, in another. Evaporate the water in each dish over the Bunsen flame. What is left in each case? How do you account for the difference? B. In which kind of water do plants grow best? Fill one flask with well water and another with rain, or distilled water. In each flask place "slips" of Wandering Jew of about the same size. Change the water in the flasks two or three times a week for about a month. In which do the plants grow best? What is the explanation? CHAPTER XIII PLANTS DEPENDENT UPON AIR AND MOISTURE Exercise 47. Gross Structure of Leaves. Object: To study the parts of a leaf. Apparatus Lilac leaves Lily-of-the-valley leaves Directions: A. Parts. Carefully examine a lilac leaf. Make a drawing of the leaf. Label the broad expanded portion, the blade, and the stem by which it was attached, the petiole. Compare the lengths of the petioles on a number of leaves on a lilac branch. From this observation what is one of the functions of the petiole? The surface of the leaf is provided with small openings or pores, called stomates, through which the leaf respires. At the discretion of the instructor these may be shown under the microscope. B. Venation. Examine the lilac leaf again. Note the continuation of the petiole through the blade. This is called the mid-rib, and its branches, ...
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Add this copy of Laboratory Manual of a Year in Science to cart. $54.95, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.