Dr., Doctor.—Debtor.
D.Sc., Doctor of Science.
D.V., God willing.
Ed., Editor, or Edition.
e.g., for example.
F.C.P., Fellow of the College of Preceptors.
F.C.S., Fellow of the Chemical Society.
F.G.S., Fellow of the Geological Society.
F.I.C., Fellow of the Institute of Chemistry.
F.L.S., Fellow of the Linnean Society.