Wright's transcription is a mishmash between 19th-century philological schemes and nascent IPA; he uses some familiar symbols like /ʃ ʒ ə ɐ/ but also older symbols like /ę̄ ȯ/ etc. I'll try and convert everything into the IPA for familiarity. As far as I can make out he uses ì i e ė ē ę̄ for /i ɪ ɛ e eː ɛː/ and similarly for the back vowels. For low vowels he has æ a à ɒ /æ a ɑ ɒ/ plus ɐ for traditional "/ʌ/". He uses mostly familiar consonants, although for /r/ he doesn't use specific symbols, but notes that it's a trill in Scotland and the northern islands, /ʀ/ in Northumberland and parts of north Durham, /ɻ/ in south Pembrokshire, Gloucestershire, and parts of Hertfordshire and Oxfordshire, and all of the south-west, causing retroflexion of following /t d l n/, and "practically the same as lit. English" everywhere else, which may be either /ɹ/ or /ɾ/ at the time; I'm not sure (although he definitely uses it for /ɾ/ when talking about t-flapping).
I should also note that I follow his conventions for place-names, which for reasons which may be obvious to the more quick-witted of you, do not follow the post-1974 English county boundary shifts.
He doesn't mention anything about America, so I'd be interested to see what American English features appear and which don't.
Vowels of stressed syllables
In this section he makes reference to Old English vowels, since they're more stable than Middle English vowels and some dialects preserve distinctions lost in the standard modern language e.g. moan ~ mown. He notes that closed and open syllables were an important distinction, and that where morphology produced morphs with one vowel in a closed and another in an open syllable (e.g. OE dæg ~ dagas), it's almost always the open syllable alternant that's preserved, both in the standard and in dialects. He also observes that when short æ (later a), e and o were followed by a single consonant + a suffixing containing a sonorant, in both dialects and the standard length is lexically variable.
Short vowels
a (æ, ɔ) in closed syllables
When in a non-marked position, OE æ gave ME a, which then developed as follows:
- In Scotland /a/ in general, /ɑ/ in the south, /ɛ/ in the centre-east and Ulster;
- In much of the country, variation between /æ/ and /ɛ/ is seen;
- /ɑ/ in Peeblesshire, and sporadically in specific lexical items in other counties;
- /ɔ/ is seen in a few lexical items like apple, gabble, lad in various counties;
- /e/ in apple and narrow in some counties.
Conditioned variation includes the combination ak, which gives:
- /ɛ/ in parts of western and south-western Yorkshire (e.g. /bɛk/ back)
- /ai̯ ~ ɑi̯/ in south-central and southern Lancashire and northern Derbyshire (/slai̯k/ slack)
- In the sequence /aks/;
- /ɛ/ in a wide swath of counties, especially prevalent in the north and Scotland;
- axe /eks/ in Buchan, Abderdeen and south Scotland; and /eːks/ in numerous counties, plus axle /eːksl̩/
OE asc, ME /aʃ/ generally develops as unmarked a, but may be fronted to:
- /ai̯/ or /ɛi̯/, in e.g. ash, smash, wash (!) in parts of Devon, Lancashire, Wiltshire, Somerset and Yorkshire and /æi̯/ in east-central and western Wiltshire;
- /aː/ in some northern counties;
- /ɑː/ in Lothian and Edinburgh (the dynamic duo of a-backing so it seems);
- /æː/ in Dorset;
- /ɛ/ in an enormous swath of counties;
- /ɛː/ in a similar area;
- /ɔi̯/ in central-southern Lancashire.
When g in the sequence ag was not lenided (e.g. drag vs. day < daġ), /ai̯/ is seen in south-central Lancashire and /ɛ/ in west and southwestern Yorkshire and parts of Lancashire.
Nasalised am, an lengthens to /aː/ in Ayrshire, northern Northumberland, the Isle of Mann, Lothian and Edinburgh (no shit), central Buckinghamshire and east Sussex; /ɑː/ in Ulster and /æː/ in south-east Kent. In Scotland usually /ɑ/ is found. /ɔ/ is also found in similar areas in some lexemes with a high degree of frequency (think Jamaican mon).
and often has lengthening;
- /aː/ or /ɑː/ in numerous counties;
- /æː/ in south-east Kent (and, I can assure you, Australia);
- /eː/ in south Scotland;
- /ɔː/ in various areas;
- In some cases quality changes instead;
- /ɛ/ in southeast Kent, south Ayrshire, Antrim;
- /ɑ/ in numerous counties especially Ireland and Scotland;
- /ɔ/ in a lot of areas, especially Scotland, but also in a few words in the literary language like bond.
- /a/ in a list of counties that lasts almost an entire page, in various lexemes at least;
- /aː/ or /ɑː/ are also frequent, as is short /ɑ/;
- /æ/ in a fair few dialects; e.g. among /əˈmæŋ/, or /ɛ/ e.g. along /əˈlɛŋ/;
- /eː/ in e.g. tongs /teːŋz/ (!!) in Buchan, Aberdeenshire, west Forfarshire and east Perthshire;
- /iə̯/ in e.g. thong /θiə̯ŋ/ (!!!) in south Scotland, north Yorkshire, parts of Northumberland
- /ɔ/ in another page of dialects, including generally the standard (along, strong, tongs, throngs), although some words have /æ/ in the standard but /ɔ/ in dialects like hang, sang;
- Long /ɔː/ is also widespread;
- /ʊ/ or /u/ is seen in much of the north;
- /ʌ/ appears in various lexical items again in many counties, and has been standardised in monger and a few other lexemes.
- Similarly for aŋk, we see:
- /aː/ or /ɑː/ in, you guessed it, Lothian and Edinburgh, plus some other northern counties;
- Regularly or sporadically /ɛ/ crops up a lot;
- /ɔ/ appears in much of the Midlands.
ME aȝt produces numerous forms; /a/ in draught, slaughter in some dialects but /au̯/ in goddamn Lothian and Edinburgh (from now on Lothburgh since they're always the same) and southwest Northumberland; aː in many counties; /æː/ in Leicestershire, Wiltshire and Dorset but /ɔː/ in remaining dialects including the standard. Later on we'll touch on ȝ, which gives /Ø, f, x, k, θ/ etc. For eight numerous dialectal forms arise; in full /axt eːxt ɪxt ei̯t iːt eːt ai̯ə̯t eə̯t aːxt ext æːxt æi̯xt æːt ɛxt iə̯t/.
OE ar, ear, ME ar + consonant gives a baffling variety of rhotic and non-rhotic forms; mostly /a(ː)r ~ ɛ(ː)r/ in Scotland and Ulster, /a(ː)r/ in the North, otherwise /aː/, with /aə̯/ and occasional /əː/ as well. Other variants noted are:
- /ɑr/ in Lothburgh, south Scotland and Inverness;
- /ær/ in darn, spark in south Scotland; and /æː/ in a surprisingly large amount of counties (/(j)æːm/ arm, /æːvəs/ harvest etc.);
- As an extension of this, /ɛr er ɛə̯ eːr eː/ are found frequently in the north and Scotland (/kert/ cart, /weːrn/ warn, /peə̯k/ park etc.);
- Even further along this path is /iə̯/ in Dorsetshire, east Herefordshire, south Oxfordshire and north Kent;
- Rounding to /ɔr ɔːr ɔː/ is common in the North and Midlands;
- In the North, raising to /əː/ is frequent (/bəːli/ barley, /wəːt/ wart etc.), which has crept into the standard in earn.
al(l) in final position gives forms with either loss or retention of l; /al/, /aə̯l/, /aːl/, /ɑːl/ are common; fronting to /æə̯l/, /æːl/, /ɛə̯l/ occurs in the South and the latter also in Yorkshire. Again rounding is very common; /ɔl/, /ɔə̯l/, /ɔːl/, etc., with some northern areas raising to /oːl/, /uə̯l/. With loss of l, the gamut is roughly repeated, but with no fronted forms; /a(ː)/, /ɑ(ː)/ are common in Scotland while rounded forms /ɔ(ː)/, /ɔə̯/, /oː/ predominate elsewhere.
alt sometimes retains the l, sometimes not. With retention of l are /al/ in the North, /aːl/ or /æl/ in the South, and /ɔl/ or /ɔːl/ in the middle. Alternatively we have /aː/, /ɑː/ in Scotland, and plain /o/, /oə̯/, /ɔː/, /oː/ in the mid and North. The lexeme halter is distinct, with some dialect forms coming from an i-umlaut form (ME heltir, heltere); whence Antrim /ˈhelðər/, Buchan/Aberdeenshire /ˈhɪltər/. Similarly ald gives a variety, but with considerably more rounding for some reason; thus we find alongside expected northern /a(ː)l/, /ɑ(ː)l/ diphthongised /au̯l/ (much of the North, Scotland), /ɛu̯l/ (Ulster), /ɔu̯l/ throughout and in most words like bold, cold, old, fold, hold, gold etc. in the standard (but not bald), and similarly /ʌu̯l/, /əu̯l/, through /uə̯l/ (Wiltshire, Kent, Lincolnshire, Somersetshire, Dorset) to /wɔl/ (south Devon /wɔld/ old, Kent /twɔld/ told), /wɔə̯l/ (Dorset /bwɔə̯ld/ bold; likewise Somersetshire, Devon, Kent); even /woːl/, /wʌl/. Fronting also occurs with /bæld/ bald (south Scotland), /e(ː)l/ in mid/northern Scotland. With loss of l we see much the same, but with no fronting or pre-glided forms; /au̯ aː ɑ ɑː ɔ ɔː ʌu̯/ etc.
Summary:
- Plain a: /a ɑ æ ɛ e ɔ aː æː ɛː ɔː/
- a-k, aks: /ai̯ ɑi̯ ɛi̯ ɛː e eː/ + normal evolutions
- a-sp, ass, ast: /aː æː ɛ æ ɑː/ + normal evolutions
- a-ʃ: /ai̯ aː ɑː æi̯ æː ɛ ɛi̯ eː ɔi̯/ + normal evolutions
- w-a: /ɔ aː ɔː/ + normal evolutions
- w-ar: /aə̯ æː ɔː əː/ + normal evolutions
- a-g (not lenided): /ai̯ ɛ/ + normal evolutions
- a-m, an: /aː ɑː æː ɑ ɔ/ + normal evolutions
- a-ŋ: /a aː ɑ ɑː æ ɛ eː iə̯ ɔ ɔː ʊ u ʌ/ + normal evolutions
- a-ŋk: /ɑː ɛ ɔ/ + normal evolutions
- a-mb is sometimes treated as open-syllable a, sometimes as o; cf. lamb/comb/womb
- aȝ-t: /a aː ɔː au̯ æː/
- ar: /ar aə̯r aː aːr ɑr ær æː ɛr ɛə̯ er eː eːr iə̯ ɔr ɔː ɔːr əː/
- al: /a aː ɔː æə̯ æː ɛə̯ ɔə̯ ɔː oː/
- al-t: /al aːl æl ɔl ɔːl aː ɑː ɔ ɔə̯ ɔː oː/
- al (final): /al aə̯l aːl ɑːl æə̯l æːl eə̯l ɔl ɔə̯l ɔːl oːl uə̯l a aː ɑ ɑː ɔ ɔə̯ ɔː oː/
- al-d: /al au̯l aːl ɑl ɑːl ɛl ɛu̯l eːl ɔu̯l oə̯l ɔːl ol ou̯l oə̯l oːl uə̯l ʌu̯l wɔl wɔə̯l woːl wʌl a au̯ aː ɑ ɑː ɔ ɔu̯ ɔə̯ ɔː ou̯ oː ʌ ʌu̯/ (!!)