Concerning the eyes of beetles, &c. By Mr. Anthony Van Leuwen- boek Account of one Edm. Melloon, who was of an extraordinary size ib. Of the posture-master, or a man' having an absolute command of his joints and muscles ib. The symptoms that attended the bite of a serpent On the scarabæus galeatus pulsator, or the death-watch. By Mr. Ben- jamin Allen On an eruption of fire out of a spot