Let's try to determine whether the \lg/ and \qg/ gallows
  are legitimate glyphs, or merely an ornate form of some other
  glyph.  It seems thath these sequences only occur at the beginning
  of a paragraph.  Let's check:
  
    cat bio-j-jsa.txt \
      | sed \
          -e 's/^/_/g' \
          -e 's/$/_/g' \
          -e 's/[ql]j/H/g' \
          -e 's/[ql]g/P/g' \
          -e 's/cs/z/g' \
          -e 's/ij/k/g' \
          -e 's/ix/e/g' \
          -e 's/is/r/g' \
          -e 's/iiu/n/g' \
          -e 's/y/i/g' \
          -e 's/ci/a/g' \
          -e 's/cg/8/g' \
          -e 's/ir/v/g' \
          -e 's/iin/m/g' \
          -e 's/in/m/g' \
      | tac \
      | number-lines-from-end-of-paragraph \
      | tac \
      | number-lines-in-paragraph \
      | egrep 'P' \
      | sort +0 -1n
  
      1   3 _Pccoe cPcoe zoe?Hcoe Hc8a qoHc8a qoHcc8a qoHcca oeHcc8a Hca?qoHc8a qoPor oea //_
      1   4 _H??e ccc8a qoHcca oHc8a 8aHc8a oHcc8a oezcc8 oPzcc8 aHzcc8a qo?jc8a oPoea //_
      1   4 _Pcccoe 8ar qoHcca ccccHa qoH??e 8ae c?cc8a Pcc8a roe qoHc8a roe //_
      1   4 _PoeHczcoe oPa zcca qoPzcc8a qoHcc8a qoHoe zca Hoezc8 qoHa //_
      1   4 _Poeccc8a zcc8a qoHcc8a qoHan o8a cccH?cz oHae //_
      1   4 _Poezcca oeHzcc8a zccoe aHcca oHcca cccor zccc8a oe //_
      1   4 _Por?ar?or aHcca Hcca o??ar ozcca qoHa ccca oHcca e8a or??e //_
      1   4 _Pzccoe8a 8Hzcca qoHoPa ror oPor oePocHca oeHa8a //_
      1   5 _Hzcc8a qoHc?m zcc8a qoHaz oHae qoPzcc8a qoHa eccc8a qoP??eo?? //_
      1   5 _P8aezcor zcHoe qoHa Pzcai? zcc8a oHae8a 8ar oHar oHc8a 8a roe //_
      1   5 _Pccca Hzccoe qoHc?m o?gccc8a oHaezc8a oeHav oHam oHcc8a //_
      1   5 _Poe zcar zcar Pccca oHzcca oHaoz am oHzcca 8aeHccca?ra //_
      1   5 _Poeam oeHcc8a qoHccca 8aHcc8a qoHcc8a oPccc8a zcoe ora //_
      1   6 _HoHoe oePccc8a qoHcc8a qoHc8ae zcoe qoHae oH8ae 8??e oezcc8a //_
      1   6 _P?cc8a 8oePccc8a qoHcc8a qoHc8a qoHoe?Pccc8a roea //_
      1   6 _Pcccoe?Hae 8ae Horcca qoHca qoHa rccc8a qoHae oeHae?zcc8a ccHa //_
      1   6 _Poe oe zcae??jc?m oHcca eHcca qoHae oHcc?s8a oHczc8a //_
      1   6 _PoeHcca qoHoe oHzc8a oeHa orH??r zcccPc?c8a oeHae //_
      1   6 _Poeccc8a qoHar zcca qoHe oe?c?cca qoHan ccca qoHa qoHar //_
      1   6 _c?jcc??a rcccHa zccPccc8a qoH??r oe qocHcca ?eccca qoHc8a Horom?a //_
      1   6 _qHor zcc8a zcca Hcc8a zae ram ???Pcc8a 8ar ccc8a qoPccc8a roroe //_
      1   6 _qo8a zcar acH?ca qoHccca Hccca oeHan oPccc8a q?goe zcHa orae //_
      1   7 _?g??ae?zc8a zcocPcc8a ??H??r zcc8a oPzcc8a oHzc8a qoHc8c?e zc8a zoe8a //_
      1   7 _Horoezcz8a oPccca zccPcca qoHam zccHca qoHc8a 8aea //_
      1   7 _Poe?Hc8a ezcccHca oeHa oH oeHcca rccca qcHca rccca rae //_
      1   7 _Poe?zcoe Hccca qoHoe zcc8a qoHzcca zaea Hccca zHoe?Pcca //_
      1   7 _Poecca cPaeov o?jc?m oHam cc?cca Ham aeor oeHcca qoHae //_
      1   7 _Pzcoe?PcccPc8a qoHcc8a 8a qoHc8a 8am zccHcc8a qoHam ccccHca 8ar ccccHca ak //_
      1   8 _Hccc8a ePccc8a oPzcc8a cccPoe Pccc8ar zcc8a qoPccc8a //_
      1   8 _Poe8aHa 8aeoe oHc8a ccHav oPccc8a q?Hae c?cc8a cccPccc8a oPccca //_
      1   8 _Pzcaroe zccHca qoHzc8a qo?jae8a oPc?cc8a qoHar or am?oe //_
      1   8 _zaHam oHcc8a ccc8a qoHc?m cPcca oPcccca oHa?z?am ??Hara //_
      1   9 _Hoecc8a qoHc8a qoPoe qoHc8or cco???ccc8a qoHae?ccc8a Hak //_
      1   9 _P??ecc8 ??ccc8a z?ccHca oeHa 8ar oPaeHam oqoPccc8a ??r?a?m oPoea oroea //_
      1   9 _Par zcca ?jcc8a zccHae 8ae 8ar oe Pccc8a zccH 8c?m oPae?zccHa //_
      1   9 _Pccc8ar zcc8ae qoHar zcc8ae oHcc8a qoHc8a ?oHaie zcc8a qoHa??ezcc?? //_
      1   9 _Pccor ccccPcc8a qoHc8a ezc?c8a qoHcc8a rzcc8?Hc8a qoPzc8a qoPa //_
      1   9 _Poe8zcc8a oeH??ra qoHoeoe oH??e8a oHc8oe?or oeoroe //_
      1   9 _Poearar oHor oPcccca aHcca oPccaea ezcc8a qo?gcc8ae eHo8ae oPa Horoe?s //_
      1   9 _Pzc?c?e8a oPaezcc8a qoHzcc8a qoHc8a 8or zcca oPccc8a 8ae ?so?Pccak //_
      1  10 _qcHc8a zcc8a qoHoe o8ae ccae 8ar qoPzcc8a qoHc8a qoHc8a qoHc8a 8ae //_
      1  11 _Pccc8ar oPccc8a qoHc8a oPccc8a qoP8a 8an cccHa?s ccc?gcca qoHak z //_
      1  11 _Poe zcc8a qocc8a qoHam cccPcca qoe eHam zcc8a qoe //_
      1  11 _Pzcoe Hc?m oeHar zcca qoHc?m 8??e oeHam oHan zcae qoHa //_
      1  12 _Poeaecc8a Pz?cc8a oPccc8a qoHa?s aHzccoe qoHcc8a oHa ezcc8 ccPzccc8a aHae //_
      1  13 _Har zcccHca qoHae qoHc?m cc?c?e Hc8a rccc8a Pccc8a rzc?oe 8ae //_
      1  13 _Pccc8a ezcccHcc8a qoHcca qoHam oeHa oPccc8a Pccc8a //_
      1  14 _Hcc??8cca ezcc8a 8aea 8ae 8zccc8a Pcccoe ePoe oe?c?cc8a qoHa //_
      1  14 _Po?sae?zca qoHc8a cPcae zcc8a zccoe Hccc8a eHam zcc8a qoea //_
      1  15 _Poecc?a qoHc8a zcoe ?Pccc8a oePccc8a o?gzc8a oea //_
      1  15 _Poezca 8ae zcc8a qoHan 8ar cc?s8a ?c?c??ga qo?jar zcc8a e8a //_
      1  15 _cPc8or zcc8ae qoPcc8a 8zcc8a zcc8a Hccc8a ezcccHae zcccPca 8am 8a //_
      1  16 _P??e?8ar?av??e qoHoe ccca qoPccc8a qoPccc8a 8a?ecccz ??eHc8a e??ea //_
      1  16 _Po??c?m oe qoHcc8a Hccoe Hccae?oeHcc aPccca oPccc8a Haea //_
      1  16 _Poecc8a qoPccoe qoHor oePccc8a oPoe or???sa //_
      1  17 _P8oe ?gzcc8a q?PoeHc?m ocHcor oHcc8a qoHcc8a qoq?cccoe oe?jom a8arzcca //_
      1  18 _Hor zcc8a oHc8a qoHc8a oHc8ar cPc8??roe //_
      1  18 _PoHan oHcc8a or cccza zoe?zcca qoHcca qoHc8a oeHc8a ccca?Hae 8a qoe //_
      1  18 _Poe?zca ?c??sca?Hcc8 qoP oHcc8a o??jc?c??ga ?oHc???8c??? ??ai??? //_
      1  19 _PaHc8a oePccc8a qoHc8a zPcca ccc8a roe 8??r oPccc8a qoHc8a //_
      1  19 _qo?gcccoe oPccc8a qoHc?m oPccc8a?eccca cPcar oe oHaeor //_
      1  21 _Pccoe?zcc8a zcH??e oHc8a oPccoe?or Hcc8a oPccc??a?z?am cPccca oez //_
      1  25 _Hzcc8??r zcc8a qoPccc8a qoHc8a 8a?qoHoe o?ja //_
      1  29 _???q??cc???c??? ???Pc?c??a ?o??gzc??a ?q???g?c???c???c???n aza //_
      4   1 _Poe oeHccc?i?zccoe qoHcca // =_
      4   1 _azccca oezcca oeHzcc??a z?ccPzcca // =_
      5   1 _??o8c??cca ?jar oHc?m oPar oHc?m oeHca // =_
      6   1 _Hcccoe Hc8a Pcccoe Hc?m zcc8a qoHam oHca qoHc8a ccc8a // =_
      6   1 _Pcccoe zcc8a qoHam zcoe8a // =_
      8   1 _Pccc8ae oHc8a zcccHcc8cca qoHa ccc8a ccara // =_
     11   1 _Poezc8a qoHcc8a zcHa oeoeccca // =_
     14   1 _zcca oPccca cHcca oecca // =_
     16   1 _8am 8oe z?c?r cPcca e?gcc?c?e zccar qoecca // =_
     16   1 _eccc8a??Pccc8a qoHam 8??r // =_
      5   2 _zor oeHa qoHa?Ha?Hor c?cca?Ha HoHoe oPccc8a qoHc?m zccHa qoHc?m oe //_
      6   2 _Pccc8a qoHccc8a oHam cccHca zcc8a oHc?8a qoHa qoHc8a oe?oHc8a oHc8a rak //_
      8   2 _Poeccc8 oHan zcc8a zcc8a 8ae ccc8ar qoHcca ??Hcca ez??r?am ora //_
      8   2 _aH???e or zcc8a ???qoe?Hcc8a 8am 8Hc?m cPc?8a oe8a //_
     12   2 _8zcc8a Pccc8a qoHan ccc8a 8??ecce qoHcc8a qoH??e oeccca //_
     12   2 _Hzcc8a qoHc?m ccc8ae Pccc8a cccHa zc?m ccc8a qoHan oe //_
     15   2 _8an ccPam oPaea HoHaea //_
      3   3 _Poe oeor ccca qoHc?m zcc8a qoHc?m 8eccc?sa oe r?c?m?8ar //_
      5   3 _Poe ??e am oeHae zcar zcc8a qoHoe cc8a e8oe 8ar ae //_
      5   3 _Poe Har zcc8a qoHc8a oHae zcca qoHar?cccHca oHccca qoHccc8a cc???ca qoHam //_
      9   3 _8am cceccPzccca Hc?e cccoe 8a?? c?roHca 8am //_
      2   4 _8c?m zcca??jcc8a eH?? oPccc8a qoHc8a oHca Hae 8an oHcca oHa //_
      2   4 _??ccca 8ae?zccc8a cPccc8a oHc?m zcca qoPccca oe 8or?ccc8ccca //_
      2   4 _Hccc8a Pccc8a qoHcca ?soe oe8av zcccHca qoe e c?ccc8a qoHcc8a eoe?ccc8a //_
      3   4 _???qoHcc8a aHcca zccca or or am acPam ?cccHcca 8??? aHa //_
      3   4 _zam zcc8a Pz?cc8a qoHar zccoe qoeccca qoHa qoHae qoHa?? //_
     23   4 _Pccca Hzcca qoH?ca qoHae ?zc??ca qo?? ccc8a qoHak //_
      5   5 _zae?cccoe Har zcc8a zae?Hc8a zav qoHc8a q?Pc?c8a ecccPcc8a e8ar //_
      7   5 _zccca q?Pccc8a qoe cccc8a qoHcar cccca eoea 8a //_
     13   5 _azcca e?zcca?Ham eor a?m zccHca ?P?cca ???oe?Hcc8a?Har oHa ear //_
     25   5 _qoHc8a eHca Hae zcc8a qoPccca qoe Pccc8a oHcca cccHca zcca eoe ???e zccca?8a? //_
      4   6 _zaeHcca zor zcccHca 8am oHar ccPccc8a cPcca oHa oeor oHcca raecce //_
     11   6 _Pccc8a qoHca oHcoe qoe zccor zcc8a qcHc8az //_
     14   6 _Horc?m zcc8a ??ccor or zccH oHar?Pcc8a oPc?c?eor oHae zcc8a //_
      6   7 _Poecc8arcn zccHca qoHa aHar aeoe eHam oezcc8a oHc?m oHar oPar HoePa //_
      8   7 _Pccc8a rzccae 8ae8a qoHcc8a rzcc8a qo?jcc8a qoHcc8a eoccc8a //_
      9   7 _qoHccza qoHc8a qo?jcc8a cccPcca //_
      4   8 _Poe or oeHc?m ocHca qoHam oHc?m oHar zcca qoeHa //_
      9   8 _Par?o8a zcccPca cccoe qoHae?8ar oHc8a oea //_
      7   9 _Poezc8ae oHc8av oPzcc8ae qoHc8a zcc8a Pzcc?c8ae HzccoHcc8a ozccPoez //_
      7  10 _8zcc8a qoHcc8a qoPccc8a qoHaea 8ar oHam oHccae ak //_
      8  10 _???Pam zc?c?e qoHc?m cccHa qoHcc8a qoHar zccHca qoH??e zccc?jca qoHc?m oeHak //_
     10  10 _8zcc8a qo??c8a or?zcc8a Pccc8a qoHc?c8a oHc8a oPccc8a //_
     12  10 _qoHc8a zcca Hae oHc8a aPccc8a Hc8a eoeor //_
     17  10 _Pccc8ar zccPcca ec?cc8ara 8ae c?cae zca?Hoe zcc8a qoHak //_
      2  11 _qoeccca zccHca qoHca ecca oPccca 8an zc8a qoHc8ar ??ecc8a zo?? oHa 8a eccc8a //_
      3  11 _Pzc8a oPcc8a qoHc8a qoHcc8a qoHc8a qoe?Hc8a qoHc8a oHa //_
      8  11 _oHae oPae oHcca eoe oeoe??joe?Hc8a qoHc8a qoHa ePcc8a qoHcc8a eoe //_
     15  11 _zom Har Hc8a?P?c?ca Hcc8oeH8a //_
      5  12 _qoPccc8a qoe ccc8a qoHcca o8am rc?m 8aea //_
      7  12 _???s?c??c8a qocc8a oe cca rzc8a ezcc8a 8ar cc8a Pcc8a //_
      7  12 _Por?zcca oHan ccc8a qoe?zccoe oeccc8a //_
     18  12 _8aezcc8a qoe?zccc8a qoHae8a cccPa 8c?m ae?oeor oec?m ccc8a zcccHca qoHc?? eor //_
      5  14 _8zcc8a aHcc8a zcccH?a 8am oHc8a qoHcc8 qoHc8a e?ccP?c8a //_
      5  14 _Pom oe Hc8a oHc8a qoHa oHcc8a qoHca //_
     13  14 _Pccc8a Hcc8a qoHc8a qoHc8a qoHc8a qoHc8a qoHan oezcc8a //_
      4  15 _aHcz?ca 8c?cc8?a?Hc8a aHc8a 8ar aHc8a?Pca qoHa aHc8a oHae //_
      7  20 _Pccc8a qoHzc8a aHan ccc8a qoHar cca eoe ccc8a qoHa //_
      6  21 _Pccca?H??c?r oeHa 8ar oHca qoHan cccHca qoHcc8a qoHa //_
      7  23 _zcc8 ae?zccl?ca ?sc?m cccPcc8a an oeHcca eHar an oHcca eHan ccc8a 8ar 8aea //_
      5  25 _zoe?ccc8a qoHcc8a qoPccc8a qoH?cc? ??oe zcc8a qoHc8a z?cca o?jcc?s ae ae ccc8c?m?8a //_
      2  28 _8zcc8a qoH8?8aar cHca?s cccP c?an oHan qoHcor zcc8a qoe ?i??iu zccae?s qoHcca //_

  So, `P's occur mostly , but not exclusively, at the beginning of the paragraph (64 lines out of 126).
  
  It seems that the end-of-paragraph is often missing in the transcript file, especially when it
  precedes a page break.