biomedicalephemera: Embryo of Chick in Shell Shell removed and amniotic sac dessicated after 19 days
biomedicalephemera: Embryo of Chick in Shell Shell removed and amniotic sac dessicated after 19 days incubation. Note the air sac on the left of the egg; without that, the chick would suffocate. The in the air sac oxygen is replenished through micropores in the shell. These micropores are also why if you have a particularly smelly fish, for example, in the same refrigerator as your eggs, the eggs will taste like fish even long after the fish has been removed. Handbook of Photomicography. H. Lloyd Hind and W. Brough Randles, 1913. -- source link