[273] Defoe's ignorance of microscopes was not shared by Robert Hooke, whose Micrographia (published in 1664) records numerous discoveries made with that instrument.
[274] Roup is a kind of chicken's catarrh.
[275] Them, i.e., such experiments.
[276] From the Latin quadraginta ("forty").
[277] From the Latin sexaginta ("sixty").
[278] Kinds, species.
[279] Old age.
[280] Abscesses.
[281] Himself.
[282] The essential oils of lavender, cloves, and camphor, added to acetic acid.