Twine, cotton, catgut etc. gets caught around their toes/feet whilst rummaging around towns. The stuff tightens, toes/legs swell and eventually fall off.
Think were getting there believe the reverse end of the match was made into a point then used to remove the canker lesion then rubbing the other end over the wound.
My father use to race the Boeykens strain and the fella he got them from told him to treasure any that showed the dark tip on their tongue, said they were the breeders.
Peter, I haven't treated for canker for many years now, what I do give them is an Iodine solution twice a week through the summer months and once a week throughout winter.
11th April Peterborough 18th April Newark 25th April Newark 2nd May Wetherby (Amal) 9th May Ripon (Amal) 16th May Wetherby 23rd May Newark 30th May Kelso (LNRC) 6th June Retford 13th June Wetherby 20th June Stonehaven (LNRC) 27th June Ripon 4th July Newark 10th July Thurso (LNRC) 25th July Huntingdon 1st August Huntingdon 8th August Peterborough 15th August Newark 22nd August Retford 29th August Wetherby (Amal) 5th Sept Newark 12th Sept Aycliffe (LNRC) 19th Sept Newark