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Show , . The Fertile Aphis. The report of the "Smithsonian Institution, In-stitution, Just issued, gives an account of the hop nphls, in which the amazing fecundity of these minute Inserts Is shown. According to the author, the mother aphis produces 13 generations in a year. As each generation contains con-tains an average of 100 Individuals, It was revealed that her progeny barring bar-ring destruction from attacks of ene-m-' jmd other natural causes would v-mber well Into ten sextlllion aphides I annually. Scientific American. |