MAGE INTERIOR

If you've ever wondered why there was a cutout of the moon shaped at the door of most latrines, there is some credible sounding for this explanation. Go ahead and choose the one which sounds best for you.
With no indoor plumbing period outhouses, did there were also no electricity. The small moon shape cut out, located high on the outhouse door was put there so that just enough light could shine in to see what you're doing. If light from the Sun or au Clair de lone, a necessary confidentiality without being in total darkness.
With this theory, the cutting of the Crescent Moon was not necessary to light because most latrines had a top vent on the back wall that allow light and fresh air. Instead, the cutting of the Crescent Moon has a very practical form to meet your hand thanks to the door from the outside or be closed inside. It did had no locks or extra, because that material door handle as it was difficult to find and increasing cutting was just easier and cheaper.
Many people were illiterate latrines have been used. The symbol of the Moon is another sign of womanhood. Pit toilets with Crescent Moon were originally destined for women. Toilets for men had a star symbol or sun carved out of the door to the ground, the male counterpart to the symbol of the moon. It is believed that latrine of most men fell into disuse while women were better preserved. As a result, eventually everyone started using latrines with the symbol of the moon on them.
No matter what theory is really the truth, one thing is for certain. The Crescent Moon on the latrine door became a symbol of nostalgic Americana decoration.