Observations on the destructive species of dipterous insects known in Africa under the names of the tsetse, zimb and tsaltsalya, and on their supposed connexion with the fourth plague of Eygpt

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith