above the other, and do so wonderfully move the one from the other when the Wing is expanded, that it would deserve an intire Treatise: so wonderful is the wisdom of the great Creator seen in the shape of these Wings, and indeed what would not be wonderful of which he is the Author?
The Ephemeron having thus quitted the water endeavoureth with all possible speed to attain a resting place on land, which having attained, it there shed∣deth a second Skin, a very thin Film from its whole body, viz. from its Head, Breast, Belly, Legs, Tails, and Wings. And this second Skin shedding on land differeth from the first in the water; for in the first Skin-shedding the Worm loseth wholly its former shape, which it doth not in this second shedding.
In the first Skin-shedding, the Skin of the Worm bursting open on its Head & Back, suddenly falleth from its body and it as suddenly betaketh to flight, but with∣al loseth considerable parts, all the Gills on both sides with the Ten Finns under them, besides these Gills thus shed there remain no hairs, which disappear so intirely as to leave but very small Signs or points thereof, which on the side of the Belly make a kind of a small list. It looseth also its Teeth or Sheres, the shape of its Legs, the Wing-Cases, the Tails, &c. So that by this First Skin-shedding, it cometh forth wholly like another Creature.
But although this order or method is very difficult, if not impossible to be observed, in this so sudden Change of the Worm; yet may it with much ease be discerned, if of a Worm thus ready for Change the Skin be slowly and with Art and Care taken of; for then the shedded Gills may be clearly seen remaining in the shed Skin; also there may be seen the remaining points thereof sticking out in the Flie; there may also be seen in the Skin the pits in which they stuck; in the same is also visible the shed Skins of the Air-vessels of the Muscles, the Arteries, Veins, Nerves which se∣parate