 ... into each other, but are perfectly well defined ; being as distinct from each other as are any two species of the same genus, or rather as any two genera of the same family. Thus in Eciton, there are working and soldier neuters, with jaws and instincts...  The Primary Factors of Organic Evolution - Page 462by Edward Drinker Cope - 1904 - 547 pagesFull view - About this book
 | Charles Darwin - 1861 - 470 pages
...are working and soldier neuters, with jaws and instincts extraordinarily different : in Cryptocerus, the workers of one caste alone carry a wonderful sort of shield on their heads, the use of which is quite unknown : in the Mexican Myrinecocystus, the workers of one caste never leave... | |
 | Charles Darwin - 1864 - 472 pages
...are working and soldier neuters, with jaws and instincts extraordinarily different : in Cryptocerus, the workers of one caste alone carry a wonderful sort of shield on their heads, the use of which is quite unknown : in the Mexican Mynnecocystus, the workers of one caste never leave... | |
 | Charles Darwin - 1883 - 494 pages
...soldier neuters, with jaws and instincts extraordinarily different : in Cryptocerus, the workers cf one caste alone carry a wonderful sort of shield on their heads, the use of which is quite unknown: in the Mexican Myrmecocystus, the workers of one caste never leave... | |
 | William Platt Ball - 1890 - 78 pages
...transmit their own modifications and habits. They are descended from countless generations of queen bees and drones, whose habits have been widely different...leaf-cutting ants has a single eye in the midst of its 1 "Origin of Species," p. 128 ; Bates' "Naturalist on the Amazons." Darwin is " surprised that no one... | |
 | William Platt Ball - 1890 - 178 pages
...(probably through eating particles of the royal food) become capable of producing a few male eggs. and has jaws nearly five times as long. In another...its forehead. In certain Mexican and Australian ants some of the neuters have huge spherical abdomens, which serve as living reservoirs of honey for the... | |
 | Academy of Natural Sciences of Philadelphia - 1894 - 674 pages
...probably through eating particles of the royal food ) become capable of producing a few male eggs. heads, very powerful mandibles, and "extraordinarily...classes in the leaf-cutting ants has a single eye in the middle(?) of its forehead. In certain Mexican and Australian ants some of the neuters have huge spherical... | |
 | Edward Drinker Cope - 1896 - 602 pages
...be a tolerably clear proof that such changes as the evolution of complicated 1 The Effects tf I 'if and Disuse, Nature Series. 1890, p. 24. structures...Origin of Species, pp. 230-232 ; Bates's Naturalist on the Amazents. Darwin is surprised that no one has hitherto advanced the demonstrative case of neuter... | |
 | Edward Drinker Cope - 1896 - 580 pages
...to be a tolerably clear proof that such changes as the evolution of complicated 1 The Eff-cts ff Usc and Disuse, Nature Series, 1890, p. 24. structures...and Australian ants 1 Origin of Species, pp. 230-232 ; Bates' s Naturalist on the Amazons. Darwin is surprised that no one has hitherto advanced the demonstrative... | |
 | Edward Drinker Cope - 1896 - 576 pages
...changes as the evolution of complicated 1 The Ejects of Use and Disuse. Nature Series, 1890, p. 2^. structures and habits and social instincts can take...and Australian ants 1 Origin of Species, pp. 230-232 ; Bates' s Naturalist on the Amazons. Darwin is surprised that no one has hitherto advanced the demonstrative... | |
 | Charles Darwin - 1896 - 406 pages
...are working and soldier neuters, with jaws and instincts extraordinarily different : in Cryptocerus, the workers of one caste alone carry a wonderful sort of shield on their heads, the use of which is quite unknown : in the Mexican Myrmecocystus, the workers of one caste never leave... | |
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