. Contributions from the Osborn Botanical Laboratory. Plants. 240 Evans: Air chambers of Grimaldia fragrans section, cut immediately below the epidermis, and seems at first to belie his statement. The figure shows the partitions, almost complete, of an air chamber, the cells being distinguished by stip- pling. Only one end of the chamber is represented; the other end did not show because the section was slightly oblique in that region and passed through the epidermis instead of the green tissue beneath. That the stippled cells represent the boundaries of a chamber is evident from their close u
. Contributions from the Osborn Botanical Laboratory. Plants. 240 Evans: Air chambers of Grimaldia fragrans section, cut immediately below the epidermis, and seems at first to belie his statement. The figure shows the partitions, almost complete, of an air chamber, the cells being distinguished by stip- pling. Only one end of the chamber is represented; the other end did not show because the section was slightly oblique in that region and passed through the epidermis instead of the green tissue beneath. That the stippled cells represent the boundaries of a chamber is evident from their close union and also from the. Fig. 3. Section parallel with the surface, just below epidermis, X 270. Fig. 4. Section a short distance below the one shown in Fig. 3, X 270. fact that an epidermal pore was situated above the middle of the space which they enclose. It will be seen that the chamber con- tains a number of cells, circular in section and either entirely free or else loosely connected with one another or with the cells of the partitions. Similar cells are shown elsewhere in the figure, and a superficial examination would interpret them as the sections of filaments, especially if they were considered in connection with Fig. I. The incorrectness of this interpretation is brought out by a comparison with FiG. 4, which shows the same chamber at a lower level, the cells of the partitions being again indicated by stippling. In this figure the complete boundaries of the chamber. 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 Osborn Botanical Laboratory. [New Haven?] Osborn Botanical Laboratory, Yale University
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