_Phi_ is a remarkable letter. In most copies it is the largest in the alphabet, quite disproportionately large in Codd. ZL (Paris 62) and others, and to some extent in Codd. AR, Ephraemi, Rossanensis, and Claromont. The circle (which in the Cotton Genesis is _sometimes_ still a lozenge, see above, p. 32, note 1), though large and in some copies even too broad (e.g. No. 18), is usually in the line of the other letters, the vertical line being produced _far_ upwards (Cod. Augiens. and Nos. 16, 41), or downwards (No. 10), or both (No. 36). On the Rosetta stone the circle is very small and the straight line short. _Chi_ is a simple transverse cross (Χ) and never goes above or below the line. The limb that inclines from left to right is in the uncial form for the most part thick, the other thin (with final points according to the practice stated for _epsilon_), and this limb or both (as in Cod. Z) a little curved. _Psi_ is a rare but trying letter. Its oldest form resembled an English V with a straight line running up bisecting its interior angle. On the Rosetta stone it had already changed into its present form (Ψ), the curve being a small semicircle, the vertical rising above the other letters and falling a little below the line. In the Cotton Genesis _psi_ is rather taller than the rest, but the vertical line does not rise above the level of the circle. In Codd. ANR and Rossanensis the under line is prolonged: in R the two limbs are straight lines making an angle of about 45° with the vertical, while oftentimes in Hyperides and Cod. Augiensis (Scrivener’s _photograph_, ll. 18, 23) they curve _downwards_; the limbs in N and R being strongly (slightly in Rossanensis) pointed at the ends, and the bottom of the vertical bevelled as usual. In Cod. B of the Apocalypse, in Evan. OWdΞ, and even in Hyperides, the limbs (strongly pointed) fall into a straight line, and the figure becomes a large cross (No. 7). In Evan. 66 the vertical is crossed above the semicircle by a minute horizontal line.