Cambridge Latin Course find his son Rufus, who lives in Britain, thus explaining the reason for Quintus' visit. The third book picks up in the Roman province of Britain, in the city of Aquae Sulis (Bath) in particular. Cogidubnus falls ill and goes to the baths at Aquae Sulis, and Salvius, seeing his chance, hatches a plot with the baths' owner, Lucius Marcius Memor, to kill him. Quintus foils the plan, much to Salvius' dismay. He also finds Barbillus' son Rufus and gives him a message. When Cogidubnus eventually dies in captivity, Salvius writes a false will for him. A continuous narrative throughout
Aphanizomenon flos-aquae toxic chemicals released when cells die. Once released (lysed), and ingested, these toxins can damage liver and nerve tissues in mammals. In areas where water quality is not closely monitored, the World Health Organization has assessed toxic algae as a health risk, citing the production of anatoxin-a, saxitoxins, and cylindrospermopsin. Dogs have been reported to have become ill or have fatal reactions after swimming in rivers and lakes containing toxic "A. flos-aquae". Microcystin toxin has been found in all 16 samples of "A. flos-aquae" products sold as food supplements in Germany and Switzerland, originating from Lake Klamath: 10 of 16