. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. 72 THE PLANT: A GENERAL INTERNAL VIEW 23. Cells and Protoplasm. â Suppose we were to take the stem of some common weed, cut a very thin cross slice of it with a razor, and then examine it under a micro- scope. It would look a good deal like Figure 24. We would see a great number of very small compartments of different shapes and sizes. These little compartments and what they contain are called cells. But this discovery that plants are composed of cells is
. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. 72 THE PLANT: A GENERAL INTERNAL VIEW 23. Cells and Protoplasm. â Suppose we were to take the stem of some common weed, cut a very thin cross slice of it with a razor, and then examine it under a micro- scope. It would look a good deal like Figure 24. We would see a great number of very small compartments of different shapes and sizes. These little compartments and what they contain are called cells. But this discovery that plants are composed of cells is only the first step toward learning about the life which goes on in- side of these cells. What you see in Figure 24 might be called the framework or skeleton of plant life. This frame- work is not it- self alive. That which is alive is a colorless, trans- parent substance inside the cells. This living substance is called protoplasm. You will find protoplasm to be an exceedingly important word in this or in any other study of living things. Huxley called protoplasm the physical basis of life. No better definition has been given to it. Just what it is no one knows. The most striking thing about it appears to be that it is constantly changing. But, as long as it is. His* Fig. 24. ââ Cross section of the stem of the castor-oil plant. This is not a woody plant. It dies in 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 Coulter, John G. (John Gaylord), b. 1876. New York, American Book Co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
