The green slime is called Rad Slime. It has not yet been added to the game, but, by using commands you can spawn it. The Rad Slime emits some radiation because of which you cannot stay too long near them. On the slime wikia it says it will be added in the
George Washington wore several different sets of dentures over the course of his lifetime, none made of wood. Instead, the dentists treating him would have used the cutting-edge materials of the time: bone, ivory, lead, brass, gold, and the castaway teeth of horses, donkeys, cows, and, yes, human beings.
Bust of Washington based on a life mask cast in 1786, National Portrait Gallery, Washington, D.C. Houdon's portrait sculpture of Washington was the result of a specific invitation by Benjamin Franklin to cross the Atlantic in 1785, specifically to visit Mount Vernon, so that Washington could model for him. Washington sat for wet clay life models and a plaster life mask.