At first papyrus was only used in Egypt, but by about 1000 BC people all over West Asia began buying papyrus from Egypt and using it, since it was much more convenient than clay tablets (less breakable, and not as heavy!). People made papyrus in small sheets and then glued the sheets together to make big pieces.
Your baby's first poo is called meconium. This is sticky and greenish-black. Some babies may do this kind of poo during or after birth, or some time in the first 48 hours. After a few days the poo will change to a yellow or mustard colour.
While there is always speculation that castor oil also causes the baby to pass meconium, itâs my understanding that castor oil does not cross the placenta, so the slight increase in meconium with castor oil-induced births may instead be linked to its popularity after 40 weeks of pregnancy.