. Boys and girls in biology : or, Simple studies of the lower forms of life. Biology. THE GREEN PLANT. 31 the yeast-cell (Fig. 21); it has a woody or cellulose sac, cell-jelly, or protoplasm, within the sac, sometimes a thin space, vacuole, and sometimes a little round Fig. Bkoken Cell. spot which looks like a kernel, or nucleus. If yon press the cells lightly, the little sacs will burst, and the jelly-like protoplasm will flow out (Fig. 22). You can also color the cells with magenta, as you did the yeast or torul^ ; but, if you color them with iodine instead of magenta, you will notice t
. Boys and girls in biology : or, Simple studies of the lower forms of life. Biology. THE GREEN PLANT. 31 the yeast-cell (Fig. 21); it has a woody or cellulose sac, cell-jelly, or protoplasm, within the sac, sometimes a thin space, vacuole, and sometimes a little round Fig. Bkoken Cell. spot which looks like a kernel, or nucleus. If yon press the cells lightly, the little sacs will burst, and the jelly-like protoplasm will flow out (Fig. 22). You can also color the cells with magenta, as you did the yeast or torul^ ; but, if you color them with iodine instead of magenta, you will notice that some of the jelly or protoplasm gets blue. Now, iodine turns starch blue ; so it may be there are some starch-grains in these cells, but we do not know positively. These cells, too, like the yeast-cells, have an odd name of their own—proto- coccus. It means—-first berry. Perhaps this name was given because these cells look like berries. I think you can remember it, because you have learned other names, which are just as long and hard, such as Yang-tse-Kiang and Brahmapootra ; besides, you see protococcus al- most every day, while probably none of you have ever. 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 Stevenson, Sarah Hackett, 1843-1909; Huxley, Thomas Henry, 1825-1895. New York : D. Appleton and company
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbiology, bookyear1875
