The operator stands on the outside of the small corral, and the assistant catches the kids and turns them belly up before the operator, onto a board which has been fastened to the fence. A pair of clean scissors, or a sharp knife, which may be kept in a five per cent. carbolic acid solution when not in use, serve to cut off the distal end of the scrotum. The testicles are then seized with the fingers and drawn out. The operator drops the castrated kid into the large enclosure and the assistant presents another kid. Two men can operate on sixty kids an hour. The testicles are slippery and some herders prefer to use the teeth instead of the fingers to extract the testicles. Under no circumstances should any unclean thing be put into the scrotum. Death usually results from infection, and infection from uncleanliness. A little boracic acid might be sprinkled over the cut surface as an additional precaution, but this is unnecessary if ordinary cleanliness is observed. If after a few days the kid's scrotum swells, and does not discharge, the scrotum should be opened with a clean instrument. Less than one-half of one per cent. of the kids will die from this operation.
While castrating the kids the operator will discover that some of the kids have but one descended testicle. When these animals are found the descended testicle should be removed, and they should be recognized by some distinctive ear mark or brand. These animals will develop like bucks. It is a disputed question as to whether they are able to exercise regenerative power, but they will cover the does, and in some cases they probably get kids. The undescended testicle can be removed, but as the testicle usually lies close to the kidney, and is hard to distinguish from that organ in the young animal, it is best to delay the operation until the ridgling is at least six months old. The instruments necessary for this operation are a stout rope to suspend the animal, a clean sharp knife, scissors to remove the mohair from the place to be incised, and sharp needles threaded with silk. The knife, scissors and silk should be immersed in a hot 5% carbolic acid solution, and they should be kept in this solution except when actually in use.