. Beginners botany. Botany. Fig. 124. — kKSPi ra- tion OF Thick Roots, (CO2). 91. In a jar of germinating seeds (Fig. 123) place carefully a small dish of limewater and cover tightly. Put a similar dish in another jar of about the same air space. After a few hours compare the cloudi- ness or precipitate in the two vessels of limewater. 92. Or, place a growing plant in a deep covered jar away from the light, and after a few hours in- sert a lighted candle or splinter. 93. Or, perform a similar experiment with fresh roots of beets or turnips (Fig. 124) from which the leaves are mostly removed. I
. Beginners botany. Botany. Fig. 124. — kKSPi ra- tion OF Thick Roots, (CO2). 91. In a jar of germinating seeds (Fig. 123) place carefully a small dish of limewater and cover tightly. Put a similar dish in another jar of about the same air space. After a few hours compare the cloudi- ness or precipitate in the two vessels of limewater. 92. Or, place a growing plant in a deep covered jar away from the light, and after a few hours in- sert a lighted candle or splinter. 93. Or, perform a similar experiment with fresh roots of beets or turnips (Fig. 124) from which the leaves are mostly removed. In this case, the jar need not be kept dark; why ? To test transpiration. 94. Cut a succulent shoot of any plant, thrust the end of it through a hole in a cork, and stand it in a small bottle of water. Invert over this a fruit jar, and observe that a mist soon accumulates on the inside of the glass. In time drops of water form. 95. The ex- periment may be varied as shown in Fig. 125. 96. Or, invert the fruit jar over an entire plant, as shown in Fig. 126, taking care to cover the soil with oiled paper or rubber cloth to prevent evaporation from the soil. 97. The test may also be made by placing the pot, properly protected, on bal- Fig. 125.—To illustrate Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bailey, L. H. (Liberty Hyde), 1858-1954. Toronto : Macmillan
Size: 1468px × 1702px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectbotany, bookyear1921
