[_An one-line Cypher._] A line to be continuous, and yet capable of signifying a series of letters, must be curved. A method of performing this occurred to the author some years ago, which affords a very simple key, being composed from the Circle and the Ellipsis, and can be, therefore, very readily kept in mind. The first affords only one figure, the second can be varied to one vertical and two inclined figures, and all can be again varied as to size, but for convenience only three gradations are recommended, as four or more would increase the difficulty of writing accurately. These varieties are shown in the annexed diagram-- [Illustration: A one line Cipher] where each is described three-fold, with a horizontal line through the centre. Each figure thus affords three varieties of size above, and three below the line, making six figures each, or twenty-four in all, as curvilinear signs for letters. These taken in rotation, may be extended as above, or in any arbitrary order, and each employed, as in short-hand, to signify letters, syllables, or words. In practice it is only requisite to bear in mind the three gradations of size, so as never to mistake the middle semicircle for the outer ones. This is to be avoided by invariably making the small figure as small as possible, and the greater figure as large as space will permit. 4. This invention refined, and so abreviated that a point onely sheweth distinctly and significantly any of the 24. letters; and these very points to be made with two pens, so that no time will be lost, but as one finger riseth the other may make the following letter, never clogging the memory with several figures for words, and combination[7] of letters; which with ease, and void of confusion, are thus speedily and punctually, letter for letter, set down by naked and not multiplied points. And nothing can be less then a point, the Mathematical definition of[8] being _Cujus pars nulla_. And of a motion[9] no swifter imaginable then[1] _Semiquavers_ or _Releshes_, yet applicable to this manner of writing. Footnotes [7] combinations. P. [8] of it. MS. and P. [9] motion, equally as swift as _semiquavers_. P. [1] than what expresseth even.