. Animal life as affected by the natural conditions of existence. Animal ecology. TRANSFORMATION OF A CRUSTACEAN. 157 success, for he brought Artemia Milhausenii back to Artemia salina by breeding successive generations in salt water which he made weaker and weaker. Now the differences between the two species are so great that no zoologist had previously cast any doubt on the accuracy of classing them as two species,. Fig. 42.—Transformation of Artemia salina to A. Milhausenii. 1, tail-lobe of A. salina and its transition through 2, 3, 4, 5, to 0, into that of A. Milhausenii. 7, postabdomeu of
. Animal life as affected by the natural conditions of existence. Animal ecology. TRANSFORMATION OF A CRUSTACEAN. 157 success, for he brought Artemia Milhausenii back to Artemia salina by breeding successive generations in salt water which he made weaker and weaker. Now the differences between the two species are so great that no zoologist had previously cast any doubt on the accuracy of classing them as two species,. Fig. 42.—Transformation of Artemia salina to A. Milhausenii. 1, tail-lobe of A. salina and its transition through 2, 3, 4, 5, to 0, into that of A. Milhausenii. 7, postabdomeu of A. salina ; 8, postabdomen of a form bred in slightly salt water; 9, gill of A. Milhausenii; 10, gill of A. salina. From Schmankewitscll. and with all the more reason because each seemed to exclude the other; Schmankewitsch's experiment has nevertheless proved their relationship, and also explains very simply the fact that they never occur together. It is merely the constancy of the external conditions of life—the greater or less saltness of the. 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 Semper, C. (Carl), 1832-1893. New York, D. Appleton and Co.
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishernewyo, bookyear1881
