But to continue our overview: the remainder of book II (from chapter 5 on) discusses the causes of the embryological development of vivipara, while the ovipara are the primary focus in book III, which closes with a discussion of animals that are not sexually generated, including those that arise ˜spontaneously.™ ❋ Lennox, James (2006)
Some of these are called membranes and others choria, the difference being one of more or less, and they exist in ovipara and vivipara alike. ❋ Unknown (2002)
After this stage some of the ovipara produce the egg in a perfect condition, others in an imperfect, but it is perfected outside as has been often stated of fish. ❋ Unknown (2002)
But the eggs of birds and the quadrupedal ovipara are perfect when produced. ❋ Unknown (2002)
But when we come to the ovipara which are both of a cold nature and also moister (such is the fish kind) we find the white not separated at all because of the small size of the eggs and the quantity of the cold and earthy matter; therefore all fish eggs are of one colour, and white compared with yellow, yellow compared with white. ❋ Unknown (2002)
The passage is the same as that of the solid nutriment in all those animals that have no penis, in all the ovipara, even those of them that have a bladder, as the tortoises. ❋ Unknown (2002)
This is plain in the ovipara, for they have their parts differentiated in the egg after separation from the matrix. ❋ Unknown (2002)
In the vivipara it is large and rich in blood, because of their natural heat; while in the ovipara it is small and dry but capable of expanding to a vast extent when inflated. ❋ Unknown (2002)
In the ovipara, again, it is low in fish (as in women and the viviparous quadrupeds), high in birds and all oviparous quadrupeds. ❋ Unknown (2002)
For in all of them, not only in the ovipara, the ducts adhere to the back and the region of the spine. ❋ Unknown (2002)
Now in the vivipara the uterus is within the mother, but in the ovipara it is the other way about, as if one should say that the mother was in the uterus, for that which comes from the mother, the nutriment, is the yolk. ❋ Unknown (2002)
To take the uterus first, it is in the front of the body in vivipara because of the foetus, but at the loin and the back in ovipara. ❋ Unknown (2002)
Therefore in such animals the uterus is dissimilar to that of both the vivipara and ovipara, because they participate in both classes; for it is at once near the hypozoma and also stretching along downwards in all the cartilaginous fishes. ❋ Unknown (2002)
For we must understand that, in the case of animals developed in eggs, the chick has the same relation to the yolk as the embryo of the vivipara has to the mother so long as it is within the mother (for since the nourishment of the embryo of the ovipara is not completed within the mother, the embryo takes part of it away from her). ❋ Unknown (2002)
For no viviparous animal, be it apodous or be it possessed of feet, is so given to creep into holes as are the ovipara. ❋ Unknown (2002)
But nevertheless they are found to wake even in the womb (this is clear in dissections and in the ovipara), and then they immediately fall into a sleep again. ❋ Unknown (2002)
To begin with the ovipara, they differ in the manner of laying their eggs, for some produce them imperfect, as fishes whose eggs increase and are finally developed outside of them. ❋ Unknown (2002)
They exist in none but viviparous animals; though in some ovipara certain parts are metaphorically spoken of as horns, in virtue of a certain resemblance. ❋ Unknown (2002)
But among the ovipara (1) birds produce a perfect hard-shelled egg, unless it be injured by disease, and the eggs of birds are all two-coloured. ❋ Unknown (2002)
The same applies to the passages in the male, whether they have testes or no, as to the uterus of the ovipara. ❋ Unknown (2002)
