The extant letters of Jane herself begin in 1796, and will accompany us through the rest of the story. They are far the most important additions that can be made to the short history contained in the _Memoir_; and the little notices which we have given--it may have seemed with needless particularity--of her relations and neighbours have been given partly in order to enable the readers of her letters to follow the numerous personal allusions to be found in them. We must not, however, try to extract more out of the letters than they will yield. The bulk of them belong to the collection published by Lord Brabourne, and nearly the whole of this collection consists of letters from Jane to Cassandra. But the normal condition of the sisters' lives was to be together--residing in one house, sleeping in one room. We can therefore only learn from this source what happened on the comparatively rare occasions when they were separated. Nor is this all, for a good deal of their correspondence is missing. Some of it is probably lost by accident; a great deal was certainly destroyed by Cassandra of set purpose. The Austens had a great hatred and dread of publicity. Cassandra felt this with especial force, and the memory of Jane was to her so sacred that to allow the gaze of strangers to dwell upon the actions or the feelings of so precious a being would have seemed to her nothing short of profanation. In her old age she became aware that Jane's fame had not only survived but increased, and that a time might come when the public would wish to know more details of her life than had been given in the short memoir, written by Henry Austen, and prefixed to her posthumous works. Cassandra would not indeed be likely to think it possible that the letters themselves should be published,[61] but they might be made use of as materials, and so she determined to do what must have been a great sacrifice, and burn all those which were specially dear to herself, feeling confident that the remainder would not be disturbed. The destroyed MSS. without doubt included much that would have been of particular value to the biographer. We must also remember that the correspondence was between sisters who knew, each of them, what the other was thinking, and could feel sure that nothing one might say would be misapprehended by the other; and the sort of freemasonry which results from such a situation adds to the difficulty of perfect comprehension by outsiders. Jane, too, was a mistress of subtle irony: the inveterate playfulness which is constantly cropping up in her books appears also in her letters. Secure of her correspondent, she could pass criticisms, impute motives, and imagine circumstances which would have been very far from her nature had she thought it possible that any less perfectly informed third person could see them.