The Master (Roger Delgado) has stolen some top secret information giving details of one of the most destructive weapons in the known universe, and it is up to the Doctor (Jon Pertwee) to get that information back. The Doctor's quest takes him to the planet Uxarieus, where he becomes caught up in a dispute between the human settlers and the Interplanetary Mining Corporation. Meanwhile, the Master remains at large, and with murderous robots and rampant lizards to contend with, the Doctor's search for the all-important doomsday machine become evermore difficult.

The 18th century was a wealth of knowledge, exploration and rapidly growing technology and expanding record-keeping made possible by advances in the printing press. In its determination to preserve the century of revolution, Gale initiated a revolution of its own: digitization of epic proportions to preserve these invaluable works in the largest archive of its kind. Now for the first time these high-quality digital copies of original 18th century manuscripts are available in print, making them highly accessible to libraries, undergraduate students, and independent scholars.Medical theory and practice of the 1700s developed rapidly, as is evidenced by the extensive collection, which includes descriptions of diseases, their conditions, and treatments. Books on science and technology, agriculture, military technology, natural philosophy, even cookbooks, are all contained here.++++The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to insure edition identification: ++++British LibraryW020124Caption title: A description of the American yellow fever, in a letter from Dr. John Lining, physician at Charles-Town, in South Carolina, to Dr. Robert Whytt, professor of medicine in the University of Edinburgh.Philadelphia: Printed for Thomas Dobson, at the stone-house, no 41, South Second Street, 1799. 30, 2] p.; 8