. American carnation culture. Carnations. THE DEMAND FOR FRESH AIR. 59 The breathing pores number thousands on every carnation leaf, and exist on both the upper and lower surface of the leaf, which is not the case in many species of plants. They are sim- ply mouths or nostrils leading down between the cells which make the tissue of the leaf Through these openings is exhaled oxygen gas, and effete poisonous elements in the form of vapor; and they inhale carbonic acid gas, and healthy tissue-building material in atmospherical Fig. 1. Surface view of a carnation leaf under very strong magn
. American carnation culture. Carnations. THE DEMAND FOR FRESH AIR. 59 The breathing pores number thousands on every carnation leaf, and exist on both the upper and lower surface of the leaf, which is not the case in many species of plants. They are sim- ply mouths or nostrils leading down between the cells which make the tissue of the leaf Through these openings is exhaled oxygen gas, and effete poisonous elements in the form of vapor; and they inhale carbonic acid gas, and healthy tissue-building material in atmospherical Fig. 1. Surface view of a carnation leaf under very strong magnification, show- ing the epidermal cells and the round openings leading to the stomata. A man requires 250 cubic feet of air every hour to supply his system with the needed amount of oxygen, and his blood is distributed over 1400 superficial feet of cell surface in the lungs to absorb from the air inhaled this essential life-giving element. The vegetable blood of a carnation plant is distributed over an area of cell walls in its foliage a thousand times geater than its leaf surface, for precisely the same purpose as in an animal but with reversed function. The plant expires oxygen and inhales carbonic oxide. An almost air-tight glass house holding thous- ands of breathing carnation plants would be speedily exhausted of its supply of plant air and they would soon suffocate in their own poisonous exhalations. This simple automatic arrangement of nature is open only to the entrance and exit of vaporal forms. Leaves do not absorb. 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 Lamborn, Levi Leslie, 1829- [from old catalog]. Alliance, Ohio, L. L. Lamborn
Size: 1744px × 1433px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlambornl, bookcentury1900, bookdecade1900, bookyear1901
