Vitellary

The intestine makes several turns outside of the umbilicus, and continues in communication with the vitellary sac by means of the vitellary duct; upon the inner surface of the vitellary sac, and over the tortuous veins, membranous productions — puckered or wrinkled folds — make their appearance;

The gelatinous-looking investment which, as above seen, the ovum in the Fallopian tube presents in addition to the vitellary membrane (zona) of the ovarian ovum, was first indicated by the author of this report as the future chorion.

I shall here offer the remark, that if the concave superficies of the ovisac, or inner concentric, is really charged with the office of producing or excreting the vitellary matter of the ovulum, which must be admitted, even if we allow to that body the metabolic and plastic cell-force, (for it must, at least, be the producer of the cytoblatem of the cell,) there is no very great difficulty in admitting that the convex or exterior superficies of the same membrane may exercise the same functions as the dominant of those elective affinities which must be supposed as to every vital excrete.

Vitellary degeneration is recognizable as early as 4 days after injection of HCG.

It is the Opinion of most, and that no without great Probability, that all the Eggs a Hen will ever lay, are contain'd in this Vitellary or Cluster, and that as soon as this Number is exhausted, she will become effœte or barren.

A greater difficulty, in the doctrine of eggs, is, how the sperm of the cock prolificates and makes the oval conception fruitful, or how it attaineth unto every egg, since the vitellary or place of the yolk is very high; since the ovary or part where the white involveth it, is in the second region of the matrix, which is somewhat long and inverted; since also a cock will in one day fertilate the whole racemation or cluster of eggs, which are not excluded in many weeks after.

Highmore also controverted the idea of Fabricius that the cicatricula is a scar left by "breaking of the footstock, by which it was fastened to the Hen," and added, "Parisanus though it the seed of the cock, but I think it to be the seminal Atomes derived from both" the cock and hen for it is already present "when the eggs are but small little grains contained in the Egg-bag or Vitellary."

Caloricity of the body of B. rubens was determine in preovigerous females, aged>24 h, in which it is probably higher (due to the development of ovary and vitellary), than in the precedent period of growth.