THatThat no page of his Letter may be empty (saith Mr. Lister) I shall transcribe for you an Observation of Dr. Johnstons. In the German Philosophic Ephemerides of the year 1672, I meet with these words of Doctor Wedelius, Obs. 246. pag 439. Possideo particulam Calculi vaccini, instar Auri foliorum fulgidi; the subject of that Observation being an Enumeration and the Description of several Stones found in divers Animals, as in Doggs, Hoggs, Staggs, and in Cows also; of which last the now quoted words are all he saith. I do begg Dr. Johnstons pardon for having kept by me two years an Observation of this nature, which he was pleased to communicate to me, and which yet was so surprising, that I had not the assurance to offer it to you, being in this as well as in all other matters, relating to the phoenomena of Natural History, very diffident. What reasons I then had to doubt of the truth of this Observation, he best knows, and I shall not trouble you with; being a little more confident since I read the words of D. Wedelius, that the Stones sent me by the Learned Doctor were such indeed, and not some Insects Eggs, as I once did verily perswade my self they were.