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long_o insist_v upon_o the_o advantage_n of_o this_o sort_n of_o discourse_n only_o because_o i_o think_v that_o if_o i_o can_v engage_v you_o pyrophilus_n and_o such_o other_o ingenious_a person_n to_o cast_v their_o physiological_a observation_n and_o reflection_n into_o experimental_a essay_n i_o shall_v thereby_o do_v real_a learning_n no_o trifle_a service_n by_o bring_v so_o useful_a a_o way_n of_o write_v into_o the_o request_n it_o deserve_v upon_o this_o consideration_n i_o say_v i_o must_v beg_v leave_n to_o represent_v to_o you_o this_o great_a conveniency_n of_o essay_n that_o as_o in_o they_o the_o reader_n need_v not_o be_v clog_v with_o tedious_a repetition_n of_o what_o other_o have_v say_v already_o so_o the_o writer_n have_v for_o the_o most_o part_n the_o liberty_n to_o leave_v off_o when_o he_o please_v be_v not_o oblige_v to_o take_v upon_o he_o to_o teach_v other_o what_o himself_o do_v not_o understand_v nor_o
texture_n from_o the_o rest_n as_o be_v often_o manifest_a to_o the_o very_a eye_n and_o be_v by_o that_o incongruous_a texture_n dispose_v to_o be_v put_v into_o a_o motion_n differ_v from_o and_o perhaps_o very_o disproportionate_a to_o that_o of_o the_o neighbour_a part_n sect_n xviii_o i_o must_v not_o here_o stay_v to_o examine_v whether_o or_o no_o this_o motion_n of_o the_o internal_a part_n may_v not_o in_o divers_a case_n be_v make_v more_o efficacious_a by_o the_o penetration_n of_o some_o subtle_a and_o moist_a matter_n into_o the_o glass_n pore_n especial_o the_o more_o superficial_a one_o of_o some_o glass_n of_o a_o loose_a sort_n and_o so_o by_o degree_n vitiate_v the_o texture_n of_o the_o body_n and_o promote_a the_o agitation_n and_o swell_a of_o the_o saline_a corpuscle_n enable_v they_o to_o burst_v the_o glass_n after_o some_o such_o manner_n as_o the_o marchasite_n i_o late_o mention_v come_v to_o have_v a_o vitriolate_a efflorescence_n and_o even_o to_o be_v burst_v by_o the_o operation_n of_o the_o air_n this_o i_o say_v i_o must_v not_o now_o stay_v to_o examine_v because_o i_o will_v hasten_v to_o propose_v the_o second_o hypothesis_n and_o tell_v you_o that_o else_o we_o may_v congruous_o to_o what_o we_o elsewhere_o discourse_v imagine_v that_o in_o tract_n of_o time_n there_o be_v produce_v in_o some_o part_n of_o a_o glass_n a_o texture_n that_o make_v it_o resist_v more_o than_o it_o do_v former_o â—he_n free_a passage_n of_o the_o aether_n or_o some_o other_o subtle_a matter_n that_o be_v accustom_v perhaps_o stream-like_a to_o permeate_v it_o before_o which_o transient_a matter_n now_o find_v its_o passage_n obstruct_v and_o perchance_o almost_o quite_o hinder_v by_o the_o vitiate_a of_o the_o pore_n of_o the_o glass_n or_o some_o other_o inconvenient_a change_v of_o texture_n in_o it_o and_o endeavour_v to_o continued_a its_o wont_a motion_n through_o it_o do_v so_o stretch_v the_o pore_n or_o otherwise_o offer_v violence_n to_o the_o texture_n of_o the_o body_n that_o it_o cause_v a_o divulsion_n in_o the_o part_n which_o according_a as_o it_o be_v more_o or_o less_o forcible_o or_o sudden_o make_v do_v either_o bare_o crack_v the_o glass_n or_o make_v it_o fly_v asunder_o to_o the_o precedent_a doctrine_n these_o two_o thing_n agree_v not_o ill_a the_o first_o that_o glass_n be_v a_o body_n easy_o make_v electrical_a by_o rub_v which_o make_v it_o probable_a that_o its_o particle_n may_v easy_o be_v put_v into_o motion_n and_o the_o second_o that_o such_o a_o divulsion_n may_v be_v make_v in_o glass_n by_o but_o a_o inequal_a motion_n between_o the_o neighbour_a part_n as_o may_v appear_v by_o the_o chemical_a practice_n of_o crack_v glass_n which_o they_o often_o think_v fit_a to_o do_v only_o by_o apply_v a_o red_a hot_a iron_n to_o the_o place_n till_o it_o be_v sufficient_o heat_v and_o whilst_o it_o be_v very_o hot_a moisten_v it_o with_o cold_a water_n or_o even_o hospital_n which_o by_o cool_v the_o part_n that_o it_o touch_v and_o consequent_o check_v the_o agitation_n of_o the_o corpuscle_n it_o meet_v there_o whilst_o the_o contiguous_a part_n retain_v their_o former_a vehement_a agitation_n occasion_n a_o discontinuity_n or_o divulsion_n in_o the_o glass_n some_o of_o who_o part_n be_v in_o so_o swift_a and_o other_o be_v in_o so_o slow_a a_o motion_n sect_n xix_o and_o on_o this_o occasion_n i_o shall_v add_v chief_o because_o i_o will_v not_o pretermit_v so_o considerable_a a_o phaenomenon_n that_o even_o when_o glass_n seem_v to_o have_v lose_v the_o degree_n of_o heat_n that_o one_o will_v think_v necessary_a to_o have_v its_o shape_n or_o bigness_n sensible_o alter_v there_o may_v remain_v yet_o so_o much_o agitation_n in_o the_o minute_n part_n as_o when_o they_o be_v modify_v by_o the_o air_n by_o the_o cold_a or_o by_o some_o other_o invisible_a agent_n to_o make_v they_o alter_v the_o bulk_n or_o shape_n of_o the_o whole_a vessel_n they_o compose_v and_o that_o which_o one_o will_v not_o expect_v by_o enlarge_n the_o vessel_n at_o least_o if_o we_o allow_v not_o in_o the_o case_n any_o change_n of_o figure_n for_o it_o have_v often_o be_v observe_v in_o those_o glass-house_n where_o they_o work_v white_a glass_n as_o they_o call_v those_o that_o be_v pure_a and_o clear_a that_o when_o they_o have_v blow_v glass_n into_o a_o mould_n to_o give_v they_o more_o exact_o the_o desire_a shape_n and_o size_n these_o glass_n when_o they_o be_v cold_a can_v well_o be_v put_v again_o into_o the_o same_o mould_n they_o be_v blow_v in_o and_o require_v that_o the_o cell_n of_o garde_n vial_n that_o be_v to_o receive_v they_o be_v make_v a_o little_o large_a which_o observation_n a_o eminent_a artificer_n of_o my_o acquaintance_n that_o get_v considerable_o by_o fit_v fine_a glass_n to_o case_n have_v much_o confirm_v to_o i_o by_o his_o complaint_n of_o the_o inconvenience_n easy_a to_o be_v incur_v by_o the_o not_o know_v or_o not_o remember_v so_o unlikely_a a_o effect_n of_o the_o cool_n of_o glass_n but_o i_o must_v not_o prosecute_v the_o consideration_n of_o these_o and_o the_o like_a phaenomena_n nor_o examine_v which_o of_o the_o precede_a explication_n be_v preferable_a have_v mention_v they_o as_o i_o be_v say_v chief_o to_o show_v that_o which_o of_o they_o soever_o we_o pitch_v upon_o it_o will_v argue_v a_o intestine_a motion_n in_o the_o corpuscle_n of_o the_o glass_n which_o motion_n we_o shall_v think_v may_v be_v very_o slow_a if_o we_o consider_v how_o long_o a_o time_n it_o be_v on_o some_o occasion_n in_o produce_v its_o effect_n before_o it_o bring_v they_o to_o be_v discernible_a to_o our_o sense_n sect_n xx._n have_v thus_o make_v it_o probable_a that_o among_o the_o part_n of_o such_o solid_a body_n as_o i_o have_v hitherto_o instance_a in_o there_o may_v not_o be_v such_o a_o perfect_a rest_n as_o be_v general_o believe_v it_o will_v i_o suppose_v be_v expect_v that_o i_o shall_v now_o draw_v this_o consequence_n from_o what_o have_v be_v say_v that_o there_o be_v no_o such_o thing_n as_o absolute_a rest_n in_o nature_n but_o since_o at_o my_o first_o mention_v this_o paradox_n to_o you_o i_o propose_v it_o but_o as_o problematical_a and_o since_o i_o consider_v that_o we_o be_v not_o yet_o sure_a but_o that_o though_o many_o of_o the_o part_n of_o solid_a body_n may_v not_o be_v always_o moveless_a yet_o some_o other_o of_o they_o may_v sometime_o for_o a_o while_n at_o least_o be_v at_o perfect_a rest_n i_o shall_v conclude_v as_o i_o begin_v and_o without_o resolute_o deny_v that_o there_o can_v be_v any_o such_o thing_n in_o rerum_fw-la naturâ_fw-la as_o absolute_a rest_n i_o shall_v content_v myself_o to_o say_v that_o it_o be_v not_o either_o absurd_a to_o doubt_v whether_o there_o be_v or_o no_o nor_o improbable_a to_o think_v that_o there_o be_v not_o since_o we_o have_v not_o find_v it_o in_o those_o very_a body_n where_o with_o the_o great_a likelihood_n it_o may_v have_v be_v expect_v finis_fw-la ethic._n nicom_o lib._n 1._o cap._n 6._o quaestion_n natural_a lib._n 6._o cap._n 5._o epistola_fw-la 64._o accipe_fw-la pulverem_fw-la johannis_n de_fw-fr â—_o vigo_n propria_fw-la manu_fw-la paratam_fw-la vam_fw-la alioquin_fw-la admistus_fw-la minio_n est_fw-la adulteratus_fw-la prout_fw-la qualecunque_fw-la medicamen_fw-la chymicum_fw-la quod_fw-la venale_n exstat_fw-la fraud_n plenum_fw-la est_fw-la helmon_n de_fw-fr febr._n c._n 14._o sunt_fw-la nempe_fw-la olea_fw-la essentialia_fw-la venalia_fw-la quaeque_fw-la magno_fw-la aere_fw-la penduntur_fw-la adulterata_fw-la omne_fw-la atque_fw-la singula_fw-la etc._n etc._n idem_fw-la de_fw-fr feb._n c._n 15._o histoire_n de_fw-fr madagascar_n c._n 37._o paracel_n de_fw-fr mineral_n tract_n 1._o paracel_n ibidem_fw-la lib._n 3._o cap._n 6._o josephus_n acosta_n lib._n 4._o cap._n 5._o de_fw-fr re_fw-mi metallicâ_fw-la lib._n 20._o p._n 28._o lib._n 3._o part_n 5_o cap._n 3._o fournier_n hydr._n l._n 11._o c._n 11._o in_o the_o table_n annex_v to_o his_o voyage_n livy_n 11._o chap._n 10._o tycho_n brahe_n lib._n 2._o de_fw-la cometa_fw-la an._n 1577._o p._n 133._o 133._o this_o be_v one_o of_o those_o that_o make_v up_o the_o book_n of_o the_o usefulness_n of_o experimental_a philosophy_n de_fw-fr la_fw-fr longitude_n chap._n xxxiv_o fourn_v architecture_n navale_fw-mi chap._n 22._o see_v the_o essay_n of_o the_o vsefulness_n of_o chemistry_n in_o the_o ii_o sect._n of_o the_o i._o part_n of_o the_o vsefulness_n of_o e._n p._n viz._n a._n d._n 1659._o 1659._o if_o it_o be_v here_o demand_v why_o the_o experiment_n be_v not_o make_v with_o a_o great_a quantity_n of_o salt_n peter_n we_o may_v answer_v that_o the_o mention_a quantity_n be_v most_o proportionate_a to_o the_o best_a crucible_n we_o then_o have_v and_o if_o it_o be_v further_o ask_v whether_o it_o be_v not_o the_o better_a way_n of_o obtain_v the_o several_a substance_n separable_a from_o nitâ—e_n to_o distil_v it_o in_o close_a vessel_n without_o addition_n of_o any_o foreign_a body_n we_o shall_v reply_v only_o by_o represent_v that_o the_o propose_a way_n be_v not_o so_o practicable_a as_o one_o will_v imagine_v for_o aâ—_n acquiâ—seing_v in_o the_o common_a practice_n of_o chemist_n who_o be_v wont_a to_o mingle_v with_o the_o salt-petre_n they_o distil_v three_o or_o four_o time_n its_o weight_n of_o brick_n earth_n or_o some_o other_o additament_n which_o especial_o in_o so_o great_a a_o proportion_n may_v much_o alter_v the_o nature_n of_o the_o fix_a salt_n remain_v behind_o with_o it_o we_o have_v have_v the_o curiosity_n to_o try_v more_o than_o once_o whether_o we_o can_v distil_v salt-petre_n per_fw-la se_fw-la in_o glass_n retort_v and_o find_v that_o though_o to_o avoid_v give_v too_o strong_a a_o fire_n we_o once_o at_o least_o place_v the_o retort_n only_o in_o a_o pan_n full_a of_o sand_n yet_o when_o the_o heat_n be_v grow_v strong_a enough_o to_o melt_v the_o salt_n it_o crack_v the_o retort_n and_o do_v partly_o run_v out_o at_o the_o crack_n only_o we_o obtain_v some_o small_a quantity_n of_o a_o liquor_n which_o by_o its_o sourness_n and_o operation_n teach_v we_o what_o we_o may_v have_v expect_v of_o the_o rest_n of_o the_o volatile_a part_n of_o the_o niâ—re_n in_o case_n the_o vessel_n will_v have_v hold_v till_o it_o have_v pass_v over_o into_o the_o receiver_n receiver_n whether_o the_o air_n have_v any_o great_a interest_n in_o the_o figuration_n or_o in_o the_o reproduction_n of_o nitre_n the_o author_n have_v since_o examine_v by_o particular_a trial_n but_o in_o vessel_n and_o by_o way_n not_o to_o be_v easy_o describe_v in_o few_o word_n and_o therefore_o the_o further_a mention_n of_o they_o be_v reserve_v for_o another_o discourse_n lib._n 3._o de_fw-la arte_fw-la magnet_n par._n 5._o cap._n 3._o 3._o in_o some_o paper_n about_o the_o origine_fw-la of_o live_a creature_n suppose_v to_o spring_n of_o themselves_o themselves_o the_o write_v here_o refer_v to_o be_v the_o second_o tome_n of_o the_o vsefulness_n of_o experiment_n philosophy_n which_o shall_v have_v appear_v before_o these_o specimen_n specimen_n the_o author_n now_o find_v that_o something_o concern_v the_o various_a motion_n of_o the_o part_n of_o fluid_a body_n which_o he_o have_v but_o touch_v upon_o have_v be_v though_o but_o brief_o and_o without_o experiment_n yet_o excellent_o explain_v in_o a_o mathematical_a way_n by_o mounseur_fw-fr des_fw-fr cartes_n in_o the_o 56_o and_o 57_o article_n of_o the_o second_o part_n of_o his_o principle_n think_v fit_a to_o refer_v the_o inquisitive_a reader_n thither_o for_o full_a satisfaction_n about_o thaâ—_n particular_a particular_a a_o historical_a dialogue_n about_o flame_n flame_n much_o more_o considerable_a instance_n of_o this_o nature_n may_v be_v meet_v with_o in_o the_o author_n be_v new_a physico_fw-la mechanical_a experiment_n this_o way_n the_o author_n afterward_o publish_v in_o another_o book_n hydrograph_n du_fw-mi p._n g._n fournier_n lib._n 2._o cap._n 6._o 6._o this_o phaenomenon_n be_v partly_o describe_v at_o large_a in_o one_o of_o the_o author_n physicomechanical_a experiment_n helmont_n de_fw-fr febr._n cap._n 14._o hist._n moral_a cap._n 5._o histo._n nat._n &_o med._n brasil_n l._n 4._o c._n 1._o gulielm_n piso_n &_o author_n gallic_n ubi_fw-la supra_fw-la beguin_n tyrocin_n chym._n lib._n 2_o do_v cap._n 10._o lib._n 4o._o anno_fw-la domini_fw-la 1624._o hydrograph_n de_fw-fr p._n fournier_n lib._n 4._o cap._n 27._o lib._n 4._o cap._n 68_o gassend_n in_o vita_fw-la piereskii_fw-la lib._n 1._o in_o some_o of_o the_o author_n paper_n about_o the_o origine_fw-la of_o mineral_n relation_n des_fw-fr mession_n des_fw-fr p.p.j.j._n secon_fw-mi part_n cap._n 1._o egrezes_n pag._n m._n 17.18_o
well_o know_v by_o his_o write_n who_o be_v please_v to_o like_v it_o so_o well_o as_o to_o desire_v he_o may_v translate_v it_o and_o have_v according_o long_o before_o turn_v it_o into_o very_o elegant_a latin_n i_o may_v perhaps_o venture_v to_o add_v that_o though_o i_o can_v not_o justify_v myself_o by_o so_o convince_a a_o proof_n of_o my_o innocence_n yet_o he_o that_o shall_v take_v the_o pain_n to_o consider_v that_o i_o can_v not_o borrow_v of_o glauber_n the_o various_a phaenomena_n i_o have_v particular_o set_v down_o and_o much_o less_o the_o reflection_n on_o they_o &_o shall_v compare_v in_o what_o differ_v manner_n and_o to_o what_o differ_v purpose_n we_o two_o propose_v the_o make_n of_o salt-petre_n out_o of_o its_o own_o spirit_n and_o fix_v salt_n he_o but_o prescribe_v as_o a_o bare_a chemical_a purification_n of_o nitre_n what_o i_o teach_v as_o a_o philosophical_a redintegration_n of_o it_o he_o i_o say_v who_o shall_v compare_v these_o thing_n together_o will_v perchance_o think_v that_o i_o be_v as_o likely_a to_o find_v this_o last_o name_v experiment_n as_o another_o which_o thing_n i_o say_v not_o as_o if_o i_o scruple_v to_o make_v use_n of_o the_o industrious_a glauber_n or_o any_o other_o man_n experiment_n especial_o when_o i_o borrow_v not_o with_o they_o any_o of_o the_o doctrine_n i_o build_v on_o they_o but_o because_o since_o i_o neither_o do_v nor_o can_v take_v any_o notice_n of_o glauber_n book_n in_o i_o i_o judge_v it_o requisite_a to_o say_v something_o to_o prevent_v my_o be_v think_v to_o have_v unthankful_o take_v one_o of_o the_o chief_a passage_n of_o my_o discourse_n from_o a_o book_n to_o which_o i_o be_v utter_o a_o stranger_n the_o reason_n of_o my_o thus_o consent_v to_o publish_v the_o follow_a history_n of_o fluidity_n and_o firmness_n without_o the_o rest_n of_o those_o annotation_n which_o i_o write_v upon_o the_o same_o essay_n touch_v salt-petre_n be_v partly_o that_o these_o be_v my_o recent_a composure_n of_o this_o nature_n have_v be_v write_v but_o the_o last_o year_n save_o one_o and_o be_v set_v down_o when_o i_o allow_v myself_o to_o be_v less_o unacquainted_a with_o writer_n addict_v to_o the_o modern_a philosophy_n partly_o also_o because_o the_o considerableness_n of_o the_o subject_n invite_v i_o to_o make_v these_o annotation_n much_o more_o copious_a and_o somewhat_o less_o unaccurate_a than_o my_o note_n upon_o almost_o any_o other_o part_n of_o the_o essay_n &_o partly_o and_o indeed_o principal_o because_o mention_v be_v sometime_o make_v of_o this_o history_n in_o my_o fresh_o publish_v physicomechanical_a experiment_n both_o the_o printer_n and_o some_o learned_a gentleman_n who_o be_v please_v to_o think_v that_o book_n not_o unworthy_a the_o translate_n have_v solicit_v i_o to_o let_v this_o treatise_n be_v annex_v to_o the_o several_a version_n they_o be_v about_o of_o that_o pneumatical_a piece_n and_o to_o the_o english_a edition_n of_o the_o three_o foregoing_a discourse_n which_o the_o printer_n fear_n will_v without_o the_o company_n of_o these_o or_o some_o other_o make_v but_o too_o thin_a a_o book_n and_o i_o think_v fit_a to_o premise_v to_o this_o history_n the_o essay_n concern_v salt-petre_n not_o only_o because_o it_o may_v appear_v very_o improper_a to_o publish_v annotation_n without_o the_o text_n itself_o whereunto_o they_o relate_v but_o indeed_o because_o i_o find_v that_o there_o be_v still_o many_o learned_a man_n of_o the_o same_o disposition_n with_o those_o i_o have_v mention_v in_o the_o begin_n of_o this_o preface_n whence_o i_o be_o invite_v to_o divulge_v this_o essay_n by_o the_o same_o consideration_n that_o at_o first_o induce_v i_o to_o write_v it_o especial_o since_o i_o remember_v not_o that_o among_o the_o new_a philosopher_n i_o have_v meet_v with_o any_o one_o experiment_n that_o do_v so_o fair_o and_o sensible_o accommodate_v so_o many_o of_o their_o opinion_n and_o indeed_o i_o free_o confess_v that_o i_o shall_v think_v myself_o to_o have_v do_v no_o useless_a service_n to_o the_o commonwealth_n of_o learning_n if_o i_o prove_v so_o fortunate_a as_o by_o these_o or_o any_o other_o write_n of_o my_o to_o the_o like_a purpose_n to_o beget_v a_o good_a understanding_n betwixt_o the_o chemist_n and_o the_o mechanical_a philosopher_n who_o have_v hitherto_o be_v too_o little_o acquaint_v with_o one_o another_o learning_n there_o be_v to_o this_o very_a day_n a_o great_a and_o almost_o general_a misunderstand_a betwixt_o the_o corpuscular_a philosopher_n and_o the_o chemist_n most_o of_o those_o on_o the_o one_o hand_n look_v upon_o the_o spagyrist_n as_o a_o company_n of_o mere_a and_o irrational_a operator_n who_o experiment_n may_v indeed_o be_v serviceable_a to_o apothecary_n and_o perhaps_o to_o physician_n but_o be_v useless_a to_o a_o philosopher_n that_o aim_v at_o cure_v no_o disease_n but_o that_o of_o ignorance_n and_o most_o of_o the_o spagyrist_n on_o the_o other_o hand_n look_v upon_o the_o corpuscularian_o if_o i_o may_v so_o call_v they_o as_o a_o sort_n of_o empty_a and_o extravagant_a speculator_n who_o pretend_v to_o explicate_v the_o great_a book_n of_o nature_n without_o have_v so_o much_o as_o look_v upon_o the_o chief_a and_o the_o difficult_a part_n of_o it_o namely_o the_o phaenomena_n that_o their_o art_n have_v add_v to_o the_o former_a edition_n of_o this_o vast_a and_o obscure_a volume_n but_o that_o some_o of_o the_o principal_a of_o the_o hermetick_n opinion_n may_v be_v more_o handsome_o accommodate_v by_o the_o notion_n of_o the_o phoenician_n hypothesis_n than_o by_o the_o common_a philosophy_n of_o element_n of_o substantial_a form_n which_o yet_o their_o writer_n so_o frequent_o allude_v to_o and_o otherwise_o employ_v may_v appear_v from_o hence_o that_o whereas_o the_o school_n general_o declare_v the_o transmutation_n of_o one_o species_n into_o another_o and_o particular_o that_o of_o base_a metal_n into_o gold_n to_o be_v against_o nature_n and_o physical_o impossible_a the_o corpuscular_a doctrine_n reject_v the_o substantial_a form_n of_o the_o school_n and_o make_v body_n to_o differ_v but_o in_o the_o magnitude_n figure_n motion_n or_o rest_n and_o situation_n of_o their_o component_a particle_n which_o may_v be_v almost_o infinite_o vary_v seem_v much_o more_o favourable_a to_o the_o chemical_a doctrine_n of_o the_o possibility_n of_o work_v wonderful_a change_n and_o even_a transmutation_n in_o mix_a body_n and_o on_o the_o other_o side_n there_o be_v scarce_o any_o experiment_n that_o may_v better_o accommodate_v the_o phoenician_n principle_n than_o those_o that_o may_v be_v borrow_v from_o the_o laboratory_n of_o chemist_n for_o first_o chemistry_n enable_v we_o to_o depurate_a body_n and_o in_o some_o measure_n to_o analyse_v they_o and_o take_v asunder_o their_o heterogeneous_a part_n in_o many_o chemical_a experiment_n we_o may_v better_o than_o in_o other_o know_v what_o manner_n of_o body_n we_o employ_v art_n have_v make_v they_o more_o simple_a or_o uncompounded_a than_o nature_n alone_o be_v wont_a to_o present_v they_o we_o and_o next_o many_o chemical_a operation_n be_v perform_v in_o close_a and_o yet_o in_o transparent_a vessel_n we_o may_v better_o know_v what_o concur_v to_o the_o effect_n produce_v because_o adventitious_a body_n or_o at_o least_o all_o grosser_n one_o be_v keep_v from_o intrude_a upon_o those_o who_o operation_n we_o have_v a_o mind_n to_o consider_v and_o last_o the_o body_n employ_v by_o the_o chemist_n be_v for_o the_o most_o part_n active_a one_o the_o progress_n of_o nature_n in_o a_o experiment_n and_o the_o series_n of_o successive_a alteration_n through_o which_o the_o matter_n pass_v from_o first_o to_o last_o be_v wont_a to_o be_v make_v more_o nimble_o and_o consequent_o become_v the_o more_o easy_a to_o be_v take_v notice_n of_o and_o comprehend_v so_o that_o all_o this_o consider_v i_o hope_v it_o may_v conduce_v to_o the_o advancement_n of_o natural_a philosophy_n if_o as_o i_o say_v i_o be_v so_o happy_a as_o by_o any_o endeavour_n of_o i_o to_o possess_v both_o chemist_n and_o corpuscularian_o of_o the_o advantage_n that_o may_v redound_v to_o each_o party_n by_o the_o confederacy_n i_o be_o mediate_a between_o they_o and_o excite_v they_o both_o to_o inquire_v more_o into_o one_o another_o philosophy_n by_o manifest_v that_o as_o many_o chemical_a experiment_n may_v be_v happy_o explicate_v by_o corpuscularian_a notion_n so_o many_o of_o the_o corpuscularian_a notion_n may_v be_v commodious_o either_o illustrate_v or_o confirm_v by_o chemical_a experiment_n a_o physico-chymical_a essay_n contain_v a_o experiment_n with_o some_o consideraration_n touch_v the_o differ_a part_n and_o redintegration_n of_o salt-petre_a section_n i._n salt-petre_a pyrophilus_n though_o in_o that_o form_n wherein_o it_o be_v sell_v in_o shop_n it_o be_v no_o very_o obvious_a concrete_a yet_o either_o in_o its_o rudiment_n or_o under_o several_a disguise_n