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They lack true eyes, do not possess wings and have, protruding from their abdomens, a "spring tail," called a furculum, (after the Latin word for fork) which is held in place by two tiny hooks.— Adirondack Daily Enterprise
The furculum, or merry-thought, which is entire, marks the fore part of the trunk; the ischium, scapula, and most of the wing and leg bones are preserved, and there are impressions of the quill feathers and of down on the body.— The Antiquity of Man
The furculum, pelvis, and bones of the tail are in their natural position.— The Antiquity of Man
Collembola the basal part of the furculum.— Explanation of Terms Used in Entomology
28] Slender bodies, too, and the lessened divergence of the furculum, [29] would slightly diminish the spread of the wings, and so would affect the measurements taken.— Are the Effects of Use and Disuse Inherited? An Examination of the View Held by Spencer and Darwin

Century Dictionary (1)
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