$radw b el than"' s o e5 theucr r t ?l t of **eg** o?pUer, atus 1, ?

Beside the equivalence of the hon to 5 utens weight of water, the mathematical papyrus (35) gives 5 besha = (2/3)cubic cubit (Revillout's interpretation of this as 1 cubit cubed is impossible geometrically; see Rev. **Eg**., 1881, for data); this is very concordant, but it is very unlikely for 3 to be introduced in an **Egyptian** derivation, and probably therefore only a working equivalent.

The tema is the same name as the large wheat measure (35), which was worth 30,000 to 19,000 grains of copper, according to Ptolemaic receipts and accounts (Rev. **Eg**., 1881, 150), and therefore very likely worth to utens of copper in earlier times when metals were scarcer.

**Eg**, Stem of the nephridium leading to no, its external aperture.

Not too much weight must be attached **Eg**) ater evidence on this point; for the New Kingdom and still foui re the Graeco-Roman period witnessed a strange recrudescence aco upposed primitive cults, to which they gave a form that may po~ nay not have been historically exact.

Any number of points on the parabola are obtained by taking any point E on the directrix, joining **EG** and EF and drawing FP so that the angles PFE and DFE are equal.

Then **EG** produced meets FP in a point on the curve.

F B is the evolute of this circle, and for any radius DE at an angle a and corresponding tangent **EG** terminated by the evolute, the perpendicular distance of G from the line AD is c(cos a+a sin a).

Doc. **Eg**., iii.