This was a piece of Mahomet's garment, but what portion he could not say.

The pilgrim had paid largely for this blessed relic, and it was passed round our circle from hand to hand, after having first been kissed by the proprietor, who raised it to the crown of his head, which he touched with the cloth, and then wiped both his eyes.

Each person who received it went through a similar performance, and as ophthalmia and other diseases of the eyes were extremely prevalent, several of the party had eyes that had not the brightness of the gazelle's; nevertheless, these were supposed to become brighter after having been wiped by the holy cloth.

How many eyes this same piece of cloth had wiped, it would be impossible to say, but such facts are sufficient to prove the danger of holy relics, that are inoculators of all manner of contagious diseases.
I believe in holy shrines as the pest spots of the world.

We generally have experienced in Western Europe that all violent epidemics arrive from the East.