midnight before
_ III . -- A Soul from Mars _ Sitting alone on the top of the ancient castle of Montlhéry , I was conducting an experiment in optics by means of electrical communications with two assistants at Paris and Juvisy . I was trying to find out if the rays of different colours in the spectrum travel at the same rate . It was just on midnight before I brought the experiment to a successful conclusion . As I covered up my instruments , some one said , `` You would not have brought that off , Camille , if it had not been for me . I gave you the idea of comparing the violet vibrations with the red . '' I turned round with a cry of fear .