...In their observations, as well as those of others, copulation was never observed following the "dance" but was assumed to be the ultimate goal... 
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...To confirm the presumed sexes of the two individuals under observation,both were collected while in copulation...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...Reiterated copulation does not appear to produce abortion inthe sow; at least to the extent it does in other animals...
Robert Jennings 「Sheep, Swine, and Poultry」
...But we do not despair of being able next spring toobtain the complement of this proof, by seizing the female at the verymoment of copulation...
Francis Huber Anonymous 「New observations on the natural history of bees」
...But how remote from the power of the observer are the means ofascertaining a copulation in the air...
Francis Huber Anonymous 「New observations on the natural history of bees」
...Onthe same account, it was impossible to retard the copulation of a queenwithout keeping her in confinement...
Francis Huber Anonymous 「New observations on the natural history of bees」
...Since a single copulation suffices, it is clear that the male fluidacts from the first moment on all the eggsthat the queen will lay intwo years...
Francis Huber Anonymous 「New observations on the natural history of bees」
...Lastly, it follows, that althoughcold will retard the laying of a queen impregnated in autumn, she willbegin to lay in spring without requiring new copulation...
Francis Huber Anonymous 「New observations on the natural history of bees」
...But it isotherwise with the females whose copulation has been retarded: theyproduce no workers' eggs...
Francis Huber Anonymous 「New observations on the natural history of bees」
...To our infinitesurprise, what we had supposed the residue of the prolific fluid,actually proved the genital organs of the male, which separate from hisbody during copulation, and remain in the female...
Francis Huber Anonymous 「New observations on the natural history of bees」
...This canaltherefore can extend during copulation, and allow the lenticularsubstance to protrude out of the body of the males...
Francis Huber Anonymous 「New observations on the natural history of bees」
...However, it is very rare that the first copulation isinefficient; we have only seen two that required it twice; all the restwere impregnated by the first...
Francis Huber Anonymous 「New observations on the natural history of bees」
...Her second absence wastwenty-eight minutes, and she returned with the proofs of copulation...
Francis Huber Anonymous 「New observations on the natural history of bees」
...Kangaroo rats are among those rodents in which the vagina becomesplugged with a rather solid material, translucent, and of theconsistency of a stiff gelatine, after copulation...
Charles T. Vorhies and Walter P. Taylor 「Life History of the Kangaroo Rat」
...'Magdalene de la Croix, Abbesse des Moniales deCordoüe en Espaigne, confessa que Satan n'eust point copulation, nycognoissance d'elle, qu'elle n'eust douze ans...
Margaret Alice Murray 「The Witch-cult in Western Europe」
...The copulation of two coalescing cells, which in these casesoften precedes the reproduction, cannot be regarded as a sexual act unless thetwo copulating plastids differ in size or structure...
Ernst Haeckel 「The Evolution of Man」
...They are found in the womb of the rabbit, the dog, and other smallmammals, a few days after copulation...
Ernst Haeckel 「The Evolution of Man」
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advisedly gibbon vocation
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