Dzelo Ѕ

Dzelo stands eighth, writes the affricate dz, and carries the numeral 6. Its name is the Slavonic word meaning very or greatly.

Its position in the number series is peculiar and instructive. Greek had lost its letter for 6 long before the ninth century and used a separate numeral sign in that slot, so there was no Greek letter for Cyrillic to borrow. Dzelo therefore occupies a numeral position without inheriting a shape to go with it, and its sign is generally taken from the Glagolitic letter of the same name. It is the only letter in the alphabet where the Greek series supplied a number and no letter.

The sound had a short life. In most of the East Slavic area dz fell together with plain z within a few centuries, leaving two letters where the language had one sound. The letter did not disappear when its sound did, because it was still needed as the numeral 6, and this is a pattern worth noticing: the numeral function repeatedly kept letters alive long after the phonology had finished with them.

One modern descendant kept the sound as well as the sign. Macedonian has a letter for dz in its alphabet today, writing a sound its neighbours lost, so what reads in a Russian context as an obsolete liturgical curiosity is in Skopje an ordinary working letter.

Once dz and z had merged, a scribe writing Slavonic had two letters available for a single sound and no way to decide between them by ear. The response, repeated across the tradition, was to fix the choice by word rather than by sound: certain words are spelled with one letter and certain words with the other, and a scribe learns the list.

This is the single most characteristic feature of Church Slavonic orthography, and dzelo is only its first instance. The same problem and the same solution recur with on and omega, both writing o; with izhe and i, both writing i; with fert and fita, both writing f; and eventually with yat, which stopped being distinct in speech long before it stopped being written. In each case the pair survives because the church books preserve the distinction, and the distinction survives because it has become a matter of correct spelling.

The effect is that literacy in Church Slavonic is not simply the ability to sound out letters. It requires knowing a body of conventions no pronunciation will teach, which raises the cost of writing correctly and makes orthography a mark of schooling. That is not an accident of neglect; it is what happens to any orthography that outlives the sound system it was designed for, and it is the same pressure that later produced spelling reforms in Russia, Bulgaria and Serbia.

Reformers in all three countries began by attacking exactly these pairs, and the arguments they met were not about phonetics.