The advertisement of January 7th is written in a great fright, and refers to the discovery and exposure of the cipher in the _Times_ newspaper; for whenever the aforesaid philosophers perceive that a secret correspondence has arrived at a critical point they charitably insert a marplot advertisement in the same cipher. The "Flo" intrigue was carried on in figures, the key to which is as follows:-- 0 1 2 3 4 5 6 7 8 9 y. u. o. i. e. a. d. k. h. f. s. t. n. m. r. l. d. g. w. p. x. c. b. v. The reader will perhaps remember another mad-looking advertisement which appeared in the year 1853, headed "Cenerentola." The first, dated Feb. 2nd, we interpret thus:-- Cenerentola, I wish to try if you can read this, and am most anxious to hear the end, when you return, and how long you remain here. Do write a few lines, darling, please: I have been very far from happy since you went away. One of the parties cannot frame an adequate explanation of some delicate matter clearly, as we find on the 11th the following:-- Cenerentola, until my heart is sick have I tried to frame an explanation for you, but cannot. Silence is safest, if the true cause is not suspected; if it is, all stories will be sifted to the bottom. Do you remember our cousin's first proposition?--think of it. The following, which appeared on the 19th of the same month, is written in plain language, and is evidently a specimen of the marplot advertisement before alluded to:-- Cenerentola, what nonsense! Your cousin's proposition is absurd. I have given an explanation--the true one--which has perfectly satisfied both parties--a thing which silence never could have effected. So no more such absurdity. The secret of this cipher consisted in representing each letter by the twenty-second onward continually. One more specimen of these singular advertisements and we have done. On Feb. 20, 1852, there appeared in the _Times_ the following mysterious line:-- Tig tjohw it tig jfhiirvola og tig psgvw.--F. D. N. The general reader, doubtless, looked upon this jumble of letters with some such a puzzled air as the mastiff gives the tortoise in a very popular French bronze; but not being able to make anything out of it, passed on to the more intelligible contents of the paper. A friend of ours, however, was curious and intelligent enough to extract the plain English out of it, though not without much trouble, as thus:--If we take the first word of the sentence, Tig, and place under its second letter i the one which alphabetically precedes it, and treat the next letters in a similar manner, we shall have the following combination:-- T i g h f e