. The beginnings of life: being some account of the nature, modes of origin and transformation of lower organisms. Life -- Origin. 5o8 THE BEGINNINGS OF LIFE. ordinaire^ et elaborer ses vesicules internes (Fig. 4), qui deviennent huileuses, qui se scindent (Fig. 5) et se revesiculisent, jusqu'a ce que le degre d'animalisation convenable soit atteint, et propre a donner naissance aux Rotatoires les plus varies, selon la taille et la forme. ./ Fig. 91. Conversion of Encysted Euglena into a Rotifer. (Gros.) ( x 500.) a. Encysted Euglena of an oval foiin, and pointed at one extremity. h. Similar b
. The beginnings of life: being some account of the nature, modes of origin and transformation of lower organisms. Life -- Origin. 5o8 THE BEGINNINGS OF LIFE. ordinaire^ et elaborer ses vesicules internes (Fig. 4), qui deviennent huileuses, qui se scindent (Fig. 5) et se revesiculisent, jusqu'a ce que le degre d'animalisation convenable soit atteint, et propre a donner naissance aux Rotatoires les plus varies, selon la taille et la forme. ./ Fig. 91. Conversion of Encysted Euglena into a Rotifer. (Gros.) ( x 500.) a. Encysted Euglena of an oval foiin, and pointed at one extremity. h. Similar body after its contents have become animalized and converted into an embryo Rotifer. The whole mass is now larger and the investing envelope thinner, though it still remains pointed at its posterior extremity. de I'ceuf.' So multitudinous are the forms of Rotifera which he has seen emerge from these transforming Euglense that Dr. Gros says:—' L^on peut se demander s'il existe une forme de Rotatoire qui ne puisse deriver des Euglenes directement ou par d'autres transforma- tions \' Thus, in addition to the numerous kinds of 1 Such notions are certainly in harmony with facts long known con- cerning the habitats of Rotifers. Speaking on this subject Pritchard says (' Infusoria,' 4th ed. p. 653) :—* Usually they must be sought for in a systematic way, without any external indications whether a pool will prove productive or barren. We have, however, rarely been disappointed. 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 Bastian, H. Charlton. London, Macmillan and co.
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondo, bookyear1872
