text_original: But when they proceeded to investigate the blood of natives in other and neighbouring districts, they found large areas in which Sleeping Sickness was prevalent but in which Filaria perstans was absent, and, con  versely, other districts in which Filaria perstans abounded but in which Sleeping Sickness was absent.
text_transcription: BUT WHEN THEY PROCEEDED TO INVESTIGATE THE BLOOD OF NATIVES IN OTHER AND NEIGHBORING DISTRICTS THEY FOUND LARGE AREAS IN WHICH SLEEPING SICKNESS WAS PREVALENT BUT IN WHICH VALERIA PERSTANCE WAS ABSENT AND CONVERSELY OTHER DISTRICTS IN WHICH VALERIA PER STANZ ABOUNDED BUT IN WHICH SLEEPING SICKNESS WAS ABSENT
phonemes: bˌʌt wɛn ðeɪ pɹəsˈiːdᵻd tʊ ɪnvˈɛstᵻɡˌeɪt ðə blˈʌd ʌv nˈeɪɾɪvz ɪn ˈʌðɚ ænd nˈeɪbɚɹɪŋ dˈɪstɹɪkts, ðeɪ fˈaʊnd lˈɑːɹdʒ ˈɛɹiəz ɪnwˌɪtʃ slˈiːpɪŋ sˈɪknəs wʌz pɹˈɛvələnt bˌʌt ɪnwˌɪtʃ fɪlˈɛɹiə pˈɜːstənz wʌz ˈæbsənt, ænd, kˈɑːn vˈɜːsli, ˈʌðɚ dˈɪstɹɪkts ɪnwˌɪtʃ fɪlˈɛɹiə pˈɜːstənz ɐbˈaʊndᵻd bˌʌt ɪnwˌɪtʃ slˈiːpɪŋ sˈɪknəs wʌz ˈæbsənt.