Foreshadowing in Madame Bovary

"The keeper, who is at once gravedigger and church beadle (thus making a double profit out of the parish corpses), has taken advantage of the unused plot of ground to plant potatoes there. From year to year, however, his small field grows smaller, and when there is an epidemic, he does not know whether to rejoice at the deaths or regret the burials..."  See in text (Part II - Chapter One)