text_original: In analyzing sap*  phire, chrysoberyl, and some other very hard mine  rals, the quantity of silica abraded from the mortar iM)metimes amounts to five per cent, of the weight of the mineral ; and if we were not to attend to the way in which this silica has been introduced into the powder, we should give an erroneous view of the con^ stitution of the mineral under analysis. All the analyses of chrysoberyl hitherto published, give a considerable quantity of silica as a constituent of it.
text_transcription: IN ANALYZING SAPPHIRE CHRYSALBARREL AND SOME OTHER VERY HARD MINERALS THE QUANTITY OF SILICA UPBRAIDED FROM THE MORTAR SOMETIMES AMOUNTS TO FIVE PER CENT OF THE WEIGHT OF THE MINERAL AND IF WE WERE NOT TO ATTEND TO THE WAY IN WHICH THIS SILICA HAS BEEN INTRODUCED INTO THE POWDER WE SHOULD GIVE AN ERRONEOUS VIEW OF THE CONSTITUTION OF THE MINERAL UNDER ANALYSIS ALL THE ANALYSES OF CHRYSOBARREL HITHERTO PUBLISHED GIVE A CONSIDERABLE QUANTITY OF SILICA AS A CONSTITUENT OF IT
phonemes: ɪn ˈænɐlˌaɪzɪŋ sˈæp ˈæstɚɹˌɪsk fˈaɪɚ, kɹˈɪsoʊbɹˌɪl, ænd sˌʌm ˈʌðɚ vˈɛɹi hˈɑːɹd mˈaɪn ɹˈælz, ðə kwˈɔntᵻɾi ʌv sˈɪlɪkə ɐbɹˈeɪdᵻd fɹʌmðə mˈɔːɹɾɚɹ ˈaɪ ˈɛm)mˈɛtaɪmz ɐmˈaʊnts tə fˈaɪv pɚ sˈɛnt, ʌvðə wˈeɪt ʌvðə mˈɪnɚɹəl ; ænd ɪf wiː wɜː nˌɑːt tʊ ɐtˈɛnd tə ðə wˈeɪ ɪnwˌɪtʃ ðɪs sˈɪlɪkə hˈæzbiːn ˌɪntɹədˈuːst ˌɪntʊ ðə pˈaʊdɚ, wiː ʃˌʊd ɡˈɪv ɐn ɛɹˈoʊniəs vjˈuː ʌvðə kˈɑːn stɪtˈuːʃən ʌvðə mˈɪnɚɹəl ˌʌndɚɹ ɐnˈæləsˌɪs. ˈɔːl ðɪ ɐnˈæləsˌiːz ʌv kɹˈɪsoʊbɹˌɪl hˈɪðɚtˌuː pˈʌblɪʃt, ɡˈɪv ɐ kənsˈɪdɚɹəbəl kwˈɔntᵻɾi ʌv sˈɪlɪkə æz ɐ kənstˈɪtʃuːənt ʌv ɪt.