Note 70 — CONCLUDING CHAPTER. AUTHOR’S THEORY OF MALARIA.
Reading edition
A friend who resided long on the Grotevisch Rivière, and in het land den Caffre, informs me that if the Zuureveld be ploughed up, or altered by the burning, for example, of a Caffre hut, the sour grass, whence the district derives its name, disappears, and sweet herbage of various kinds take its place. None of these exist naturally in the district, so that the seeds must come from great distances.