But let one part be polished , that there may be a Looking - glass on bothe sides , whence the spectator must look in .
Let the whole window or part of it be of glass , as we use to do to keep out the cold .
Let one part be polished , that there may be a Looking - glass on bothe sides , whence the spectator must look in .
Let the whole window or part of it be of glass , as we use to do to keep out the cold .