332 FRAGMENTS some specimens of which I sent to England to be analyzed ; but being informed that it yielded gold sufficient only to pay the expenses of purifying, I gave no farther attention to it although I have had reason to think, since then, that an importation of the ore would amply pay the importer.

Nyctalopia, Hemeralopia, or Night-blindness called by the Arabs Butelleese ; and its Remedy, During my residence at Santa Cruz, I had a cousin with me who was afflicted with this disorder. When the sun sat his blindness came on, and continued till the rising sun. This youth was so afflicted, during a month, with this disorder, that he could scarcely see his way with a candle in his hand, so that it was quite painful to see him groping about. An Arab of the Woled Abbusebah Kabyl, who retain much of the science and art of their ancestors, and whose prosperity I had promoted at Santa Cruz, by facilitating his commercial adventures, communicated to me a simple remedy for this disorder; I put no faith in it, for it was so simple that I was disposed to think it an illusion. He called on me, however, repeatedly, and finding I had not applied it, he brought it one morning himself, and urged me to try it.

I did so ; and that same evening the eyes of the youth were almost well, and his sight was completely restored the following night. This