The mysteries of opium reveal'd,

by Dr. John Jones, Chancellor of Landaff, a Member of the College of Physicians in London: and formerly Fellow of Jesus-College in Oxford. Who, I. Gives an account of the name, make, choice, effects, &c. of opium. II. Provides all former opinions of its operation to be meer chimera's. III. Demonstrates what its true cause is; by which he easily, and mechanically explains all (even its most mysteri…