Arthur, however, wasn't much concerned about the threat of the Red Devil; on the contrary, he was more concerned about the situations of Great Dumas and Heine.
Although he hadn't received a formal medical education, he at least had a concept of bacteria and viruses in his mind.
Therefore, even though he couldn't figure out what caused the various diseases that were rampant in the 19th century, persistently drinking hot tea, eating only cooked food, and regularly cleaning his clothes and bed linens had helped Arthur dodge most illnesses without too much trouble.
But the case for Great Dumas, a true 19th century Parisian, was different; as a well-known epicure, the Frenchman's breadth of diet was second only to Darwin who would taste exploding insects, among Arthur's circle of friends.