The term "Top" in plastering means the finish or "top" coat. It needs to be stiff and thick so it doesn't run when applied to the surface.
yes
A note at the bottom of the staff does not have a higher than a note at the top of the staff. As notes go up the staff, they are higher.
top
The lines and spaces on a staff are numbered from the bottom to the top. So the 5th line would be the top line.
Frontline Staff APEX
No, there are not different types of plaster of Paris. However, there are different types of plaster. There is plaster of Paris, pottery plaster, Puritan pottery plaster, Cerami-Cal, and Hydrostone.
Gypsum plaster (plaster of Paris) ( CaSO4·½H2O ) A large gypsum deposit at Montmartre in Paris led gypsum plaster to be commonly known as "plaster of Paris"
plaster.
The finish plaster is normally white all the way through. It sounds like you are dealing with a pool that has been replastered by the method of putting a "brown coat"/"scratch coat" (the gray plaster you noted) over the original finish plaster surface, and a new finish coat of white plaster on top of that. The scratch coat more like a thin concrete than plaster (doesn't have the white marble dust in it) and is used to get a better bond to the old surface.
Managerial staff at the top of an organisation.
the sankofa bird
The papal staff is called a ferula. It is a staff which is topped by a cross. Bishops carry a staff with a curved top which is called a crozier.