Egg embryo is adequately developed it hatches, i.e. breaks out of the egg's shell. Some embryos have a temporary egg tooth they use to crack, pip, or break the eggshell or covering. The largest recorded egg is from a whale shark, and was in size. Whale shark eggs typically hatch within the mother. At and up to , the ostrich egg is the largest egg of any living bird, though the extinct elephant bird and some dinosaurs laid larger eggs. The bee hummingbird produces the smallest known bird egg, which weighs half of a gram (around 0.02 oz). Some eggs laid
François Lays Arts. La Rochefoucauld had an aversion to Lays both as an inveterate supporter of the Revolution, and, in particular, for the ironic remarks the singer had made about his morality campaign, which included lengthening ballerinas' skirts and providing ancient statues with fig leaves. In 1826, La Rochefoucauld had the opportunity to demonstrate his dislike when Lays, realising that life in Paris was beyond his financial means, decided to leave his post as professor and retire to the provinces to be near his married eldest daughter. According to Quéruel. Lays, probably wanting to end his career of more than 40 years