. Boys and girls in biology : or, Simple studies of the lower forms of life. Biology. BOYS AND GIRLS IN BIOLOGY. " taken in" by its feet. How odd it would be if, as you walk along, you should suddenly disappear into your boots! If you crush the amoeba, you find no trace of a tough sac, as you saw in the torula or protococcus ; you can see the nucleus only, and that but for a little while. If you stain with magenta or iodine, the whole substance becomes colored alike (Fig. 75); if there were a sac, it would not be stained. The iodine does not give it a blue color, so there cannot be a
. Boys and girls in biology : or, Simple studies of the lower forms of life. Biology. BOYS AND GIRLS IN BIOLOGY. " taken in" by its feet. How odd it would be if, as you walk along, you should suddenly disappear into your boots! If you crush the amoeba, you find no trace of a tough sac, as you saw in the torula or protococcus ; you can see the nucleus only, and that but for a little while. If you stain with magenta or iodine, the whole substance becomes colored alike (Fig. 75); if there were a sac, it would not be stained. The iodine does not give it a blue color, so there cannot be any starch in the amoeba. The new amceb^e, or blood- cells, are made like the new protococci, or mould-cells, by fission. You will first see two nuclei, or kernels, in one of the old cells. If you watch closely, you will see a partition (Fig. 76) going straight through the Fig. Partition between the Two Kernels. Heart. body of the old cell between the two kernels—thus are formed two new cells, each within its own kernel, or nucleus—and these follow in the footsteps of their ancestors, making new kernels and new divisions. If. 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
