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"Ovaries of Queen and Workers (Apis). A, Abdomen of queen, under side. P, Petiole. o, o, Ovaries. hs, Position filled by honey-sack. ds, Position through which digestive system passes. od, Oviduct. co.d, Vagina. E, Egg-passing oviduct. s, Spermatheca. i, Intestine. pb, Poison bag. pg, Poison gland. st, Sting. p, "Palps" or "feelers" of sting. B, Rudimentary ovaries of ordinary worker. sp, Rudimentary spermatheca. C, Partially developed ovaries of fertile worker. sp, Rudimentary spermatheca." — The Encyclopedia Britannica, 1910

Bee Ovaries

"Ovaries of Queen and Workers (Apis). A, Abdomen of queen, under side. P, Petiole. o, o, Ovaries. hs,…

"Fagus sylvatica; 1. male catkins; 2. female do.; 3. the latter, with the scales of the involucre stripped off to show the ovaries at the apex; 4. a male flower; 5. a half-grown male with the involucre, now consisting of consolidated scales, forced back; 6. a ripe involucre opening and exposing the nuts; 7. a transverse section of a ripe nut; 8. the same of a young ovary." -Lindley, 1853

Common Beech

"Fagus sylvatica; 1. male catkins; 2. female do.; 3. the latter, with the scales of the involucre stripped…

"Female organs of domestic fowl, in activity; from Owen, after Carus. a, b, c, d, mass of ovarian ova, in all stages of development; b, a ripe one; c, its stigma, where the ovisac or calyx ruptures; d, a ruptured empty calyx, to be absorbed; e, infundibulum, or funnel-shaped orifice of the oviduct; f, next portion of oviduct; g, follicular art of oviduct; m, mesometry, membrane steadying the oviduct; the reference line, m, crosses the constricted part or isthmus of the oviduct; these parts secrete the white of the egg; k, shell-forming or uterine part of oviduct, in which is a completed egg, i; l, lowest or vaginal part of oviduct, opening into uro-genital sinus of the cloaca; n, anus." Elliot Coues, 1884

Female Fowl Organs

"Female organs of domestic fowl, in activity; from Owen, after Carus. a, b, c, d, mass of ovarian ova,…