William Butterfield, Church Seats and Kneeling Boards (1886)
“ It is of the first importance that people should learn to abhor anything which is so awkward, perishable, and dirty as a hassock. They must not, however, forget, as some do, that the human body is so constituted that kneeling on the floor for any length of time is not the alternative. Such kneeling strains the joint between the foot and the leg at the point B B in the accompanying drawing. It is not a natural posture for that joint. To most people there would be the further objection that the floor must be dirty. The knee should be lifted about five inches above the floor in kneeling. ”
