‘_March 7._--One of the things most admired has been a prism, which I have as a letter-weight. The splendid colours which through it an Indian sun casts on the walls excite much admiration and pleasure. My little Ayah to-day asked me what my Zouave had cost. I should hardly call her _my_ Ayah, as, luckily for me, I have only one-third part of the little woman. To have a whole Ayah would be too much of a good thing.