. Essentials of botany. Botany; Botany. Fig. 153. A Group of Diatoms. A,Achnanthes; B,Cocconema; C, Merid- ian; D, Fig. 154. A Group of Desmids. A, Micrasterias; B, B', Slaurastrum (two views); C, Closterium. numerous oxygen bubbles which the plants set free. It grows in unfrozen springs even in midwinter. Not in- frequently several species are found growing with the filaments 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 r

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. Essentials of botany. Botany; Botany. Fig. 153. A Group of Diatoms. A,Achnanthes; B,Cocconema; C, Merid- ian; D, Fig. 154. A Group of Desmids. A, Micrasterias; B, B', Slaurastrum (two views); C, Closterium. numerous oxygen bubbles which the plants set free. It grows in unfrozen springs even in midwinter. Not in- frequently several species are found growing with the filaments 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 Bergen, Joseph Y. (Joseph Young), 1851-1917. Boston, Ginn

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1908