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To make blood transparent or laky. Place in each of three test tubes two or three teaspoonfuls of defibrinated blood, obtained from Experiment 89, labeled A, B, and C. A is for comparison. To B add five volumes of water, and warm slightly, noting the change of color by reflected and transmitted light.
In the little portico east of Independence Hall the gas lamp under the ceiling cast a soft pink glow on the brick columns. Independence Square was a sea of tremulous, dripping boughs. The quaint heptahedral lamps threw splashed shimmers of topaz colour across the laky pavement. "Golden lamps in a green night," as Marvell says, twinkled through the stir and moisture of the evening.
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