. Minute marvels of nature, being some revelations of the microscope, exhibited by photomicrographs taken by the author. Natural history; Microscopes. THE BEGINNINGS OF PLANT LIFE 29 its stem, possessino- a central system of cells, with a protective outer layer of other cells, and so something akin to the bark or skin of the higher plant forms appears. Fig. 20 shows an alga possessing this first differentiation in stem. Fig. 18. A many-celled glolmlar plant {ro/vox globator) which swims about in ponds, .\ctual size about ^Vi of ^^ inch structure. Advancing structure may readily be traced, alth
. Minute marvels of nature, being some revelations of the microscope, exhibited by photomicrographs taken by the author. Natural history; Microscopes. THE BEGINNINGS OF PLANT LIFE 29 its stem, possessino- a central system of cells, with a protective outer layer of other cells, and so something akin to the bark or skin of the higher plant forms appears. Fig. 20 shows an alga possessing this first differentiation in stem. Fig. 18. A many-celled glolmlar plant {ro/vox globator) which swims about in ponds, .\ctual size about ^Vi of ^^ inch structure. Advancing structure may readily be traced, although all alga; are still of lowly form, for even with our last example, each disc on its stem is but a cluster of simple thread-like cells all radiating from the one point. So we may trace a gradual rise from the lowest to the highest forms of life, and learn to recognise. 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 Ward, John J. New York, T. Y. Crowell and Co.
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Keywords: ., bookcentury1900, bookdecade1900, books, booksubjectnaturalhistory
