During these experiments, I came upon some curious results, which, I think, might puzzle our scientific men to account for.

For instance, I proved the existence of black light, or rays of such a nature as to turn the rose-coloured surface of the sensitive-plate black--that is, rays reflected from the black paint of drapery, produced black in the picture, and not the effect of darkness.
I was, like Becquerel, unable to fix the coloured image without destroying the colours; though the plates would keep a long while in the dark, and could be examined in a subdued, though not in a strong light.

The coloured image was faint, but the colours came out with great truth and delicacy.
"I began to attend the School of Art at Darlington on the 6th of March, 1872.

I found, on attempting to draw, that I had naturally a correct eye and hand; and I made such progress, that when the students' drawings were examined, previously to sending them up to South Kensington, all my work was approved.

I was then set to draw from the cast in chalk, although I had only been at the school for a month.