CHAP. IV.
_To change the Colour of a Rose._
Nothing more is wanting to change the colour of a rose, whether it is
on its stalk or not, but to burn some sulphur under it; which will make
it turn white, and it will not regain its primitive colour in less than
two hours.
Physical Amusements and Diverting Experiments Composed and Performed in Different Capitals of Europe, and in London · 第 11 / 54 题