There is so much contemporary folk lore embodied in Gerard that it is disappointing to find that when writing of mugwort, a herb which has been endowed from time immemorial with wonderful powers, he declines to give the old superstitions "tending to witchcraft and sorcerie and the great dishonour of God; wherefore do I purpose to omit them as things unwoorthie of my recording or your receiving." He also pours scorn on the mandrake legend. "There have been," he says, "many ridiculous tales brought up of this plant, whether of old wives or runnegate surgeons, or phisick mongers I know not, all whiche dreames and old wives tales you shall from hencefoorth cast out of your bookes of memorie." The old legend of the barnacle geese, however, he gives fully. It is both too long and too well known to quote, but it is interesting to remember that this myth is at least as old as the twelfth century. According to one version, certain trees growing near the sea produced fruit like apples, each containing the embryo of a goose, which, when the fruit was ripe, fell into the water and flew away. It is, however, more commonly met with in the form that the geese emanated from a fungus growing on rotting timber floating at sea. This is Gerard's version. One of the earliest mentions of this myth is to be found in Giraldus Cambrensis (_Topographia Hiberniæ_, 1187), a zealous reformer of Church abuses. In his protest against eating these barnacle geese during Lent he writes thus:-- "There are here many birds which are called Bernacae which nature produces in a manner contrary to nature and very wonderful. They are like marsh geese but smaller. They are produced from fir-timber tossed about at sea and are at first like geese upon it. Afterwards they hang down by their beaks as if from a sea-weed attached to the wood and are enclosed in shells that they may grow the more freely. Having thus in course of time been clothed with a strong covering of feathers they either fall into the water or seek their liberty in the air by flight. The embryo geese derive their growth and nutriment from the moisture of the wood or of the sea, in a secret and most marvellous manner. I have seen with my own eyes more than a thousand minute bodies of these birds hanging from one piece of timber on the shore enclosed in shells and already formed ... in no corner of the world have they been known to build a nest. Hence the bishops and clergy in some parts of Ireland are in the habit of partaking of these birds on fast days without scruple. But in doing so they are led into sin. For if anyone were to eat the leg of our first parent, although he (Adam) was not born of flesh, that person could not be adjudged innocent of eating flesh."