Eoin O'Kerrigan deserves special mention in the context of veterinary
folkore. According to McGlinchey, he was born in 1805. There are two
remarkable references to him; one was the following description of
trocarisation or 'stabbing' to relieve a bloated animal: 'put his
thumb on left hurdy and stretched his hand in direction of shoulder
and where his middle finger stretched to that was the spot'. This
is an accurate description that equals any found in current surgical
texts. Another reference demonstrated his understanding of the extremely
contagious nature of foot-and-mouth disease. It described how he removed
his clothes before crossing a stream to his homeplace after examining
affected cattle near Buncrana. This was a time before the contagious
nature of infectious disease was properly understood.
The terminology for animal disease is rich and varied
in Ireland and is closely intertwined with the folklore itself. It
was from my father, Michael and Uncle Colm that I first heard the
term 'galar na gcat' while working with lambing ewes in the
townland of Aileach beag near Bridgend in Inis Eoghain. Some debate
exists as to the precise origin of this term but it specifically refers
to the skin disease of sheep known as photosensitisation. In contact
with sunlight, affected lambs develop inflammation of the skin, particulary
on the ears giving them a cropped, 'cat-like' appearance, which
in my opinion best explains the origins of the term galar na gcat.
In his account of sheep folkore, Seanchas na Caorach, Ó hEochaich,
(1969-1970) reported that the people around Gleann Cholmcille in south
Donegal linked the appearance of the disease in to the grazing of
pastures containing plants with small yellow flowers known as lus
na Maighdine Muire or Noinín buidhe. Modern veterinary
science has linked this disease with the ingestion by sheep of the
photodynamic chemical hypericin found in abundance within the yellow
petals of these flowers known in English as St. John's Wort (Hypericum
spp.)
In addition to their observational skills, the surgical
talents of our ancestors is also apparent from reading accounts of
sheep folklore in Seanchas na Caorach, Ó hEochaich, (1969-1970). The
disease coenuriasis (gid) affects the brain of sheep. It is essentially
a tapeworm transmitted by dogs that eventually grows as a cyst in
the sheep's brain with predictably devastating consequences. Affected
sheep lose weight, walk in circles and eventually die. A number of
years ago the present author had the opportunity to use ultrasound
technology to facilitate successful removal of such a gid cyst from
a sheep's brain (Doherty et al., 1989). In this context, it is humbling
to read the following account in Ó hEochaidh' s text. 'daoine eólacha
a fhosclaíos cúl a gcinn..má thig siad ar an bhall cheart…tiocfadh
siad ar an chrumhóg a bhfuil an dochar inti' It is clear therefore,
that this form of brain surgery was routinely performed hundreds of
years before the advent of ultrasound technology!