To cross knives accidentally at meal times.
To walk under a ladder.
For the first young lamb you see in a season, or a colt, to have its tail towards you.
To kill a lady-cow (in Dorsetshire called "God Almighty's cow").
For a sportsman to meet an old woman when going out shooting is a sure sign of bad sport.
To put the bellows on a table will evoke a quarrel.
To keep Christmas holly about the house after Candlemas Day, in which case it is believed the Father of Evil will come and pull it down himself.
To put salt on another person's plate at table. The superstition that overturning salt at table is unlucky is said to have originated with Leonardo da Vinci's picture of the Last Supper, where Judas is represented as overturning the salt; but this little incident in the picture was more likely the result than the cause of the superstition.
To see the first of the new moon through a window, or glass of any sort, is also unlucky. But if you see it in the open air, turn the money in your pocket, and express a wish for luck during the ensuing month; you are supposed to ensure it.
"Always kill your pig in the new moon, or the fat will run," is an old saying.