When I say the youngest class, it is not with reference to the age of the pupils, but to the recent period of their admission, for some of them were as old in years as in the first class, while others were very young; one of them, a very pretty little Jewish girl with sparkling intelligent eyes, was indeed a mere child. We had on Sunday seen this little girl being taught her lesson, which consisted of the simple words, "I must be kind," and it was very pretty to see the way in which the notion of kindness was conveyed by signs. This morning she was writing this on the slate, and she afterwards wrote in a very neat handwriting a number of short words--cat, dog, horse, &c.--which were dictated to her by signs which were of so simple a nature that we could understand many of them; a goat, for example, was represented by the fingers being stuck on each side of the head as horns, and then by the man drawing his hand down from his chin to indicate the beard. They thus became acquainted by signs with almost every object in the first instance, and are led on by degrees to complex ideas of every kind. Dr. Stone says that the use of signs is known in England, but he believes is never practised to any extent, and certainly not in giving religious instruction. No attempt is made here, as in England, to teach them to articulate, as he considered the attempt to do this to be a great mistake, it being a painful effort to the child, which never leads to any good practical result. In some cases where deafness has been accidentally brought on after children have learned to speak, it is then as far as possible kept up; but even then the effort, as we saw, was very painful. Our next visit was to the Blind Institution, but here there was nothing very remarkable, though owing to the children not being in school we saw the Institution very imperfectly. Raised characters are used here, as I believe everywhere else; one little girl who was called up read and pronounced very well; we also heard some of them sing and play for a considerable time. The bulk of the children, or rather young people, for they keep them here till they are one or two and twenty, were walking about the gardens invariably in pairs, which seems an excellent preservative against accidents: this they do of their own accord.