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Perrault, Claude, 1613-1688 / Memoir's for a natural history of animals : containing the anatomical descriptions of several creatures dissected by the Royal Academy of Sciences at Paris
(1688)

The anatomical description of eight ostriches,   pp. 217-238 ff.


Page 229


                  eight OSTRICHES                               9
all the Cavity, went lengthwife, and a very thin Tunicle joyned them to-
gether. The fecond Membrane, which was that of the vilddle, was
Vefhy. The third, which was thin and fleck, was nothing but tl double
Membrane, of which the broad Ligament was comnpolld, whlich was di-
vided in two to embrace the Paffage of the Ovdid0sw.
  We obferved four Mufcles, appertaining to the Anus and Pcmlls: There
were two on each fide. The two firft took their Origine from thld I teirnal
part of the Os Sacrum, and descended along the Pouch of the lcItes ia, for
tle
ipace of two Linc s: they peirced it near its cxLnh-elity, and par.n11g uder
the
Sphiniier of the Anis, inferted telemiflves at the Bajis of the Peru il the
Males, and at that of the Clitoris in the Females. The two otic' i went
from the internal part of the Os Ilium, towards the bottom of the Kidnlley's,
and defcended at tie fides of the 7Ureters, and alfo pierceing teiC ictwt,
tall-
eaed themselves to the fides of the Pcnis and Clitoris.
   The Ovarium was placed at the upper part of the Kidnerys iagainll thie
Vt-
na Cava and Aorta, being firongly faftned to the Truncks of rhlie& Veff.is,
and garnifhed with feveral Eggs, covered with their skins as in I lcns. 'T'hlci
Eggs were of a different fize, viz. from the bigntfs of a Lisa to that or
a
Nutt. The Membrane, which included each Egg,, and wltichIl in ]F eaicJ ii
called le Catice, had as it were a Tail, by which thelf& Eggs are commonly
connected alltogether, and do compofe that which is called the (h'ariI um.
This Membrane was the thicker the leffer the Eggs were: It had a great
quantity of Veffels, and was faftened to the Egg which it inclolUd, by an
infinity of Fibres, being open towards the place oppofite to the Tail, as
is
the Cup ofanAcorne, when the Acorne is round and finall, and when it is
aklofl all covered with its Cup. The Egg being feparated from the Cd>/ice
or Cup, was only a very delicate Coat, which contained only the Yolk of
the Egg, in thofe which were not bigger than a Nutt; but in one of our
SubjeEds where it was found about the bignefs of two Fifis, this Coat xwas
filled with a humour like unto muddy 'Water, excepting that it was yellow.
There is ground to believe that the Natural Hcat weakened in this An. i-
mal, by the contrariety of the Air of our Climatc, had corrup'- thrcfe
Eggs.
    One of the OJfriches which are in the Park of Ve rfai/res, having Ilay'd
fLvc-
  ral Eggs, fome were brought to us, on which there wvas made Iomc Obf-r-
  vations and Experiments. For as thefe Birds do not fit on their Eggs, hut.
  expofe them to the Ray's of the Sull and the Heat of the Sand, contentin,),
  themfelves with fecuring them  from the Rain, by laying them on little
  hillocks of Sand; we refolv'd to try whether by thie Heit, as well of the
  Sun, as of the Fire, and Dung, we might at leaft procure in themn any Altera-
  tion, that might feem a Difpofition to Generation. For this end there was
  one kept fiveweeks intheSun, half buried in Sand, on a Bed of Dung rai{Cd
  three Foot from the Ground, covering it with a Glaf's Bell during the ill
  weather.  Another was put into an Athanor with a gentle Fire, keepiing
it
  alfo, for the like fpace of time, in Sand and well covered. We obf:rved
  feveral things, viz. That the Eggs diminifhed a ninth part of their wxeight;
  That the yolk and white of that which had beln heiated in the Fire, ws
:: el
  fomewhat thickened, without having any ill Scc* '1  li, 'l" Wid been
                                                                     n At
+.r


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