Ticks
I have noticed these disagreeable bloodsuckers only on the heads and
bodies of sporting or Collie dogs, who had been boring for some time
through coverts and thickets. They soon make themselves visible, as
the body swells up with the blood they suck until they resemble small
soft warts about as big as a pea. They belong to the natural family,
Ixodiadae.
Treatment--If not very numerous they should be cut off, and the part
touched with a little turps. The sulphuret of calcium will also kill
them, so will the more dangerous white precipitate, or even a strong
solution of carbolic acid, which must be used sparingly, however.