THE UNIVERSAL MERCURY NUMB. I. To be continued MONTHLY. Totum inquirit in Orbem. LONDON: Printed for J. ROBERTS, near the Oxford-Arms in Warwick-Lane. MDCCXXVI. (Price One Shilling.) A Letter from Mr. Capperon concerning Shells, &c, which A Second Letter on the fame Subject, Father Caftel's Book preparing for the Prefs, on the fame Subject, |