Chapter 9.Language across time 227
written records. The historical linguist compares language forms in the various
languages and tries to reconstruct (part of) the ancestor language, which is
indicated by the form proto ‘first, earliest stage in a language’. This stage may
have to be situated 1,000 to 3,000 years back in time, e.g. Proto-Indo-European,
Proto-Germanic, Proto-Western-Germanic, Proto-Romance. Reconstruction
is based not only on genetic relatedness, but also on the regularity principle.
The so-called sound laws, or statements of regularity, such as Grimm’s Law,
summarize what are really closer to majority rules than laws in the physical
sense. If reconstruction is applied not across languages, but to various phases of
the same language we speak of internal reconstruction. Language change can be
studied at any level, i.e. in the lexicon, morphology, etc. Since linguistic
categories appear as radial networks, it is especially those networks that can be
studied in their historical evolution. Within categories we as language users also
build up a schema, i.e. the most abstract representation of that category
applying to all its members. Language change can occur in networks, across
networks and in schemas. First we have changes within radial networks. Here
minor phonetic changes may occur such as assimilation, dissimilation, and
metathesis. Within a category’s network the items may be rearranged: the most
prototypical member dog has superseded the whole original category hound,
which has now become a relatively peripheral member of the category dog.
Changes across networks are found in the set of allophones for a given pho-
neme, e.g. the phoneme /t/ may comprise allophones like glottal stops [‘]asin
cat-call, or flaps [n]inpretty [prInI], or even a zero form as in [prII]. The radial
network for bead has undergone a most radical change-over from the domain
of “prayer” to that of “jewellery”. In grammar, an existing category, e.g. the
form one, may split into two or three categories (numeral, impersonal pronoun
and in a reduced form as the article an). Conversely, two different categories,
e.g. the masculine pronoun forms him and hine, may merge into one category.
Changes in schemas may reduce existing variations of word order as in Old
or Middle English with their SOV, OSV, VOS orders, into SVO as the sole
sentence type. Similarly the radial network of a lexical item like meat may be
reduced to only one meaning instead of several. Also new schemas may be
created, called phonologization for phonemes. The umlaut or mutation as for
example the German rounded vowel /y/ in Kühe
‘cows’ is a case in point. The
Old
Eng
lish equivalent to Kühe was kine, but due to analogical changes plural
endings in -ne have been done away with so that ME eyen is now eyes and OE
kine is now cows.