The topic is about as globally diverse in its reach as it gets, given that the practice of using charms--basically verbal incantations used to enact some sort of medical healing, protection, or a similar wanted outcome--is as ubiquitous in human societies as the most well-traveled of folk stories. For more info on charms, it is worthwhile to start here.
My particular presentation, for which I may be able to post my slides at a later date, concentrates on the place of charms in the world of educated 18th and 19th century Irish scribes. In particularly, I am proposing that scribes in this period accepted charms as a part of their normal intellectual discourse as represented by the circulation and sharing of charm texts--in other words, that charms were a not unusual part of the written world of Irish-speaking Ireland. This, I point out, contrasts with the portrayal of Irish charms by collectors of the 19th (and even 20th century) as a mostly oral practice.
The group of scholars here working on charms are a robust and eager group--I am looking forward to the rest of the week.