Details
A Geissler tube
of cylindrical form containing a spiral rising from a green vase; and another, smaller, with similar vase -- 11 & 6½in. (28 & 16cm.) long (2)
of cylindrical form containing a spiral rising from a green vase; and another, smaller, with similar vase -- 11 & 6½in. (28 & 16cm.) long (2)