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Scientific American, Vol. 94, No. 14 (1906) (1906)

leaf 9

An illustration from Scientific American, Vol. 94, No. 14 (1906), 1906, leaf 9
icts a por- In most cases the illiterate is also unable to read. tion of a battlefield upon which the armies of two ant has of late years given the most satisfactory results At the census of 1900 the number of illiterates en- colonies are shown in mortal combat. The engage- on numerous Swiss… … it is known that and write seems certain species of to indicate a ants keep Aphides (small louse-like insects) in their of the Simplon Tunnel, and which had so far served rather surprising degree of ignorance, reflecting upon colonies, and milk these of a sweet fluid which they for operating the…

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