speak_v so_o dark_o not_o only_o in_o his_o translator_n latin_a but_o in_o his_o own_o greek_a that_o if_o he_o have_v give_v a_o good_a solution_n of_o the_o difficulty_n i_o must_v ingenuous_o confess_v my_o dullness_n in_o not_o be_v able_a to_o understand_v it_o but_o to_o consider_v the_o difficulty_n itself_o there_o be_v two_o account_n on_o which_o the_o action_n of_o natural_a agent_n may_v be_v say_v to_o tend_v to_o a_o certain_a end_n one_o when_o the_o agent_n have_v a_o knowledge_n of_o that_o end_n and_o act_n with_o a_o intention_n to_o obtain_v it_o as_o when_o a_o man_n shoot_v a_o arrow_n to_o hit_v a_o mark_n the_o other_o be_v when_o the_o action_n of_o the_o proximate_a agent_n be_v indeed_o so_o direct_v as_o it_o ought_v to_o be_v to_o obtain_v a_o end_n and_o yet_o that_o end_n be_v neither_o know_v nor_o intend_v by_o the_o proximate_a agent_n but_o by_o a_o remote_a agent_n that_o be_v intelligent_a in_o the_o former_a of_o these_o sense_n i_o can_v admit_v 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see_v as_o sometime_o i_o have_v with_o pleasure_n a_o great_a engine_n wherein_o the_o work_n of_o i_o know_v not_o how_o many_o trade_n and_o a_o great_a many_o other_o motion_n be_v perform_v by_o little_a puppet_n that_o manage_v the_o tool_n of_o the_o artifficer_n and_o all_o these_o be_v set_v a_o work_n by_o one_o spring_n which_o communicate_v motion_n that_o be_v regulate_v and_o determine_v by_o the_o particular_a structure_n of_o the_o little_a statue_n and_o other_o body_n when_o i_o say_v i_o consider_v such_o thing_n as_o these_o i_o can_v think_v it_o impossible_a that_o the_o divine_a and_o great_a 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 〈◊〉_d 11.10_o heb._n 11.10_o as_o both_o philosopher_n and_o sacred_a writer_n have_v style_v the_o world_n creator_n shall_v be_v able_a by_o the_o motion_n and_o structure_n of_o matter_n to_o set_v a_o work_n very_o many_o partial_a and_o subordinate_a engine_n for_o it_o will_v not_o i_o hope_v be_v deny_v that_o the_o multitude_n of_o these_o 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ancient_o among_o the_o jewish_a husbandman_n and_o at_o this_o day_n in_o some_o part_n of_o the_o east_n the_o ox_n that_o intend_v no_o such_o matter_n do_v by_o tread_v the_o corn_n as_o well_o separate_a the_o grain_n from_o the_o straw_n as_o our_o plowman_n do_v when_o they_o thresh_v it_o purposely_o to_o make_v that_o separation_n and_o a_o horse_n or_o a_o ass_n in_o a_o mill_n may_v as_o well_o by_o his_o go_v round_o grind_v the_o corn_n as_o the_o miller_n himself_o can_v do_v nor_o be_v this_o doctrine_n inconsistent_a with_o the_o beleif_n of_o any_o true_a miracle_n for_o it_o suppose_v the_o ordinary_a and_o settle_a course_n of_o nature_n to_o be_v maintain_v without_o at_o all_o deny_v that_o the_o most_o free_a and_o powerful_a author_n of_o nature_n be_v able_a whenever_o he_o think_v fit_a to_o
be_v just_o repute_v the_o most_o perfect_a of_o animal_n it_o be_v not_o strange_a that_o he_o shall_v as_o man_n general_o do_v presume_v that_o his_o eye_n and_o other_o part_n of_o his_o body_n be_v the_o best_a contrive_v of_o any_o that_o be_v to_o be_v find_v in_o nature_n but_o yet_o i_o think_v we_o can_v from_o hence_o safe_o conclude_v that_o all_o eye_n which_o in_o other_o animal_n be_v of_o structure_n differ_v from_o those_o of_o man_n be_v for_o that_o reason_n defective_a for_o i_o consider_v first_o that_o the_o admirable_a wisdom_n display_v by_o the_o author_n of_o thing_n in_o fit_v the_o eye_n and_o other_o organical_a part_n of_o animal_n for_o the_o use_v that_o seem_v manifest_o to_o have_v be_v design_v in_o their_o fabric_n and_o for_o the_o respective_a function_n we_o actual_o see_v they_o exercise_v may_v just_o persuade_v we_o that_o the_o thing_n who_o reason_n or_o use_v we_o do_v not_o alike_o discern_v be_v yet_o most_o wise_o constitute_v such_o a_o 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so_o call_v it_o forecast_n that_o have_v admirable_o suit_v the_o eye_n of_o the_o differ_a kind_n of_o animal_n both_o to_o the_o rest_n of_o their_o body_n and_o which_o i_o here_o main_o consider_v to_o those_o part_n of_o the_o great_a theatre_n of_o the_o world_n on_o which_o he_o design_n that_o they_o shall_v live_v and_o act_v thus_o though_o diver_n beast_n as_o horse_n ox_n and_o soâ—â—_n other_o have_v their_o eye_n furnish_v with_o a_o seven_o muscle_n beside_o the_o six_o they_o have_v in_o common_a with_o man_n we_o must_v not_o conclude_v either_o that_o the_o organ_n of_o vision_n be_v imperfect_a in_o man_n or_o that_o those_o of_o these_o beast_n have_v something_o superfluous_a for_o horse_n etc._n etc._n be_v to_o feed_v for_o the_o most_o part_n on_o grass_n and_o herb_n of_o the_o field_n and_o that_o they_o may_v the_o better_o choose_v their_o food_n be_v oblige_v to_o make_v their_o eye_n look_v very_o long_o downward_o the_o seven_o muscle_n do_v excellent_o 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maintain_v they_o have_v none_o at_o all_o but_o though_o by_o anatomy_n i_o as_o well_o as_o some_o other_o that_o have_v try_v have_v find_v the_o contrary_a yet_o their_o eye_n be_v very_o differ_v from_o those_o of_o other_o fourfooted_a beast_n which_o be_v not_o to_o be_v wonder_v at_o consider_v that_o the_o design_n of_o nature_n be_v that_o mole_n shall_v live_v under_o ground_n where_o a_o sight_n be_v needless_a and_o useless_a and_o where_o great_a eye_n will_v be_v more_o expose_v to_o danger_n and_o their_o sight_n as_o dim_a as_o it_o be_v be_v sufficient_a to_o make_v they_o perceive_v that_o they_o be_v no_o long_o under_o ground_n at_o least_o so_o as_o they_o be_v wont_v to_o be_v which_o seem_v to_o be_v the_o most_o necessary_a use_n they_o have_v of_o light_n and_o eye_n zoographer_n observe_v that_o the_o chameleon_n have_v avery_n uncommon_a structure_n of_o his_o visive_a organ_n since_o to_o omit_v lesser_a though_o not_o inconsiderable_a peculiarity_n his_o eye_n often_o move_v independant_o from_o one_o another_o so_o that_o for_o instance_n he_o may_v look_v direct_o forward_a with_o the_o right_a eye_n and_o with_o the_o other_o at_o the_o same_o time_n direct_o backward_o towards_o his_o tail_n or_o may_v turn_v the_o pupil_n of_o the_o former_a straight_o upward_o whilst_o he_o look_v downward_o with_o the_o other_o which_o peculiar_a power_n seem_v to_o have_v be_v grant_v he_o by_o providence_n that_o be_v a_o very_a low_a animal_n and_o destinate_a to_o live_v for_o the_o most_o part_n in_o tree_n and_o bush_n and_o there_o chief_o feed_v on_o fly_n he_o may_v perceive_v they_o which_o way_n soever_o they_o chance_v to_o come_v within_o the_o reach_n of_o his_o long_a tongue_n by_o sudden_o dart_v out_o of_o which_o he_o catch_v his_o nimble_a prey_n whereas_o it_o may_v be_v observe_v that_o many_o or_o most_o if_o not_o all_o mere_a fish_n have_v the_o crystalline_a humour_n of_o their_o eye_n almost_o spherical_a as_o to_o sense_n and_o consequent_o far_o more_o round_o than_o that_o humour_n be_v wont_a to_o be_v find_v in_o man_n and_o other_o terrestrial_a animal_n this_o difference_n of_o figure_n though_o it_o will_v be_v inconvenient_a in_o we_o do_v very_o well_o accommodate_v fish_n since_o they_o live_v in_o the_o water_n which_o as_o a_o thick_a medium_fw-la do_v much_o more_o refract_v the_o beam_n of_o light_n than_o the_o air_n through_o which_o they_o pass_v to_o our_o eye_n it_o be_v fit_a that_o the_o crystalline_a humour_n of_o fish_n shall_v be_v very_o globous_a that_o by_o the_o help_n of_o their_o figure_n the_o beam_n already_o refract_v by_o the_o water_n shall_v be_v yet_o so_o much_o refract_v and_o make_v convergent_a as_o to_o paint_v the_o image_n so_o near_o as_o upon_o the_o bottom_n of_o the_o eye_n one_o that_o be_v curious_a have_v more_o opportunity_n than_o i_o have_v to_o survey_v and_o reflect_v on_o the_o various_a structure_n of_o the_o organ_n of_o vision_n in_o differ_v animal_n may_v if_o i_o mistake_v not_o be_v able_a to_o find_v by_o compare_v they_o with_o the_o other_o part_n of_o the_o same_o animal_n and_o the_o scene_n he_o be_v design_v to_o act_v on_o and_o the_o use_v he_o be_v to_o make_v of_o his_o eye_n in_o his_o most_o ordinary_a circumstance_n such_o a_o person_n i_o say_v may_v be_v able_a to_o offer_v a_o probable_a reason_n of_o several_a difference_n in_o those_o organ_n that_o if_o common_o take_v notice_n of_o will_v seem_v to_o the_o censorious_a to_o be_v aberration_n of_o nature_n or_o defect_n to_o which_o purpose_n i_o remember_v that_o a_o ingenious_a cultivator_n of_o optic_n give_v this_o reason_n of_o what_o both_o he_o and_o i_o have_v take_v notice_n of_o though_o it_o be_v usual_o overlook_v about_o the_o figure_n of_o the_o pupil_n namely_o that_o though_o it_o be_v oblong_o in_o horse_n ox_n and_o divers_a other_o quadruped_n as_o well_o as_o in_o cat_n yet_o in_o the_o former_a kind_n of_o animal_n the_o pupil_n lie_v transvers_o from_o the_o right_a side_n of_o the_o eye_n to_o the_o left_a but_o in_o cat_n its_o situation_n be_v perpendicular_a whereof_o he_o ingenious_o guess_v the_o reason_n may_v be_v that_o horse_n and_o ox_n be_v usual_o to_o find_v their_o food_n grow_v on_o the_o ground_n they_o can_v more_o convenient_o receive_v the_o image_n of_o the_o lateral_o neighbour_a grass_n etc._n etc._n by_o have_v their_o pupil_n transvers_o place_v whereas_o cat_n be_v to_o live_v chief_o upon_o rat_n and_o mouse_n which_o be_v animal_n that_o usual_o climb_v up_o or_o run_v down_o wall_n and_o other_o steep_a place_n the_o commodious_a situation_n of_o their_o pupil_n for_o ready_o discover_v and_o follow_v these_o object_n be_v to_o be_v perpendicular_a but_o it_o
the_o variation_n of_o it_o which_o probable_o depend_v upon_o the_o motition_n or_o change_n of_o some_o vast_a internal_a portion_n of_o the_o terraqueous_a globe_n be_v find_v to_o be_v of_o great_a use_n by_o experience_a pilot_n and_o navigator_n in_o their_o voyage_n through_o those_o vast_a sea_n they_o use_v to_o pass_v between_o europe_n and_o the_o east-indies_n as_o i_o learn_v by_o particular_a enquiry_n from_o eminent_a person_n that_o have_v more_o than_o once_o sail_v upon_o those_o sea_n the_o moon_n to_o omit_v her_o light_n serve_v man_n not_o only_o to_o make_v moon-dials_n by_o and_o to_o foretell_v regular_o the_o time_n and_o quantity_n of_o the_o various_a ebb_n and_o flow_n of_o the_o sea_n the_o knowledge_n of_o which_o be_v very_o beneficial_a if_o not_o necessary_a to_o mariner_n but_o serve_v mathematician_n for_o divers_a other_o purpose_n the_o sun_n not_o to_o mention_v his_o ordinary_a light_n and_o heat_n and_o the_o necessity_n of_o they_o to_o the_o 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indeed_o if_o we_o consider_v god_n omniscience_n and_o providence_n and_o how_o indulgent_a a_o creator_n he_o have_v be_v to_o man_n it_o may_v well_o seem_v reasonable_a to_o think_v that_o as_o god_n foresee_v that_o man_n may_v make_v very_o various_a and_o profitable_a uses_n of_o divers_a of_o his_o other_o creature_n by_o the_o help_n of_o that_o prerogative_n of_o reason_n which_o he_o have_v vouchsafe_v they_o so_o he_o design_v that_o man_n shall_v reap_v the_o advantage_n he_o have_v make_v many_o of_o his_o other_o work_n capable_a of_o afford_v they_o and_o i_o confess_v i_o think_v this_o reflection_n may_v just_o serve_v to_o recommend_v the_o doctrine_n about_o final_a cause_n that_o we_o embrace_v to_o philosopher_n that_o be_v true_o pious_a since_o it_o furnish_v they_o with_o just_a argument_n for_o gratitude_n to_o the_o author_n of_o so_o many_o good_a thing_n as_o the_o corporeal_a world_n by_o be_v contemplate_v or_o possess_v afford_v they_o for_o to_o look_v 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discourse_v a_o while_n of_o the_o four_o and_o last_o question_n propose_v at_o the_o begin_n of_o this_o tract_n which_o be_v with_o what_o caution_n final_a cause_n be_v to_o be_v consider_v by_o the_o naturalist_n but_o the_o case_n whereto_o this_o question_n may_v relate_v be_v so_o many_o and_o so_o differ_v that_o what_o i_o shall_v endeavour_v upon_o so_o diffuse_v and_o difficult_a a_o subject_n will_v be_v rather_o to_o point_v you_o out_o some_o sea-marks_a that_o may_v direct_v you_o to_o shun_v those_o latent_fw-la rock_n against_o which_o divers_a learned_a man_n have_v dash_v than_o to_o present_v you_o with_o a_o mariner_n compass_n and_o a_o sea-card_n that_o may_v constant_o guide_v you_o in_o the_o course_n of_o your_o navigation_n through_o so_o unfrequented_a a_o sea._n and_o to_o make_v way_n for_o what_o i_o be_o to_o offer_v by_o a_o distinction_n the_o want_n of_o which_o seem_v to_o have_v contribute_v to_o the_o
that_o disease_n or_o hurt_v alone_o may_v show_v how_o excellent_o all_o the_o part_n of_o our_o body_n be_v contrive_v in_o order_n to_o our_o welfare_n for_o if_o so_o much_o as_o a_o finger_n be_v make_v big_a by_o tumour_n or_o displace_v by_o be_v put_v out_o of_o joint_n or_o keep_v in_o a_o wrong_a posture_n by_o contraction_n or_o have_v its_o continuity_n violate_v by_o cut_v or_o its_o tone_n change_v by_o strain_n or_o contusion_n or_o its_o sense_n or_o motion_n take_v away_o by_o the_o palsy_n or_o its_o membrane_n fret_v by_o sharp_a humour_n or_o its_o motion_n disorder_v by_o the_o cramp_n or_o convulsion_n in_o any_o of_o these_o case_n we_o quick_o find_v how_o commodious_o the_o part_n affect_v be_v frame_v or_o dispose_a when_o any_o disease_n or_o hurt_n give_v they_o a_o preternatural_a constitution_n that_o be_v change_v that_o figure_n connexion_n tone_n &c_n &c_n which_o according_a to_o the_o institution_n of_o nature_n whilst_o the_o body_n be_v in_o full_a 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semi-opacity_n of_o the_o retina_fw-la and_o the_o several_a motion_n of_o the_o part_n of_o the_o eye_n be_v requisite_a to_o receive_v transmit_v refract_v and_o dispose_v the_o visive_n beam_n that_o come_v from_o the_o object_n after_o the_o manner_n requisite_a to_o make_v the_o lively_a picture_n of_o it_o in_o the_o bottom_n of_o the_o eye_n do_v no_o less_o concur_v to_o complete_a this_o matchless_a organ_n of_o vision_n which_o be_v so_o rare_o contrive_v in_o order_n to_o that_o use_n and_o comparative_o so_o little_a to_o any_o other_o that_o there_o be_v no_o more_o rashness_n to_o say_v that_o a_o eye_n than_o that_o a_o telescope_n be_v make_v for_o a_o instrument_n to_o see_v with_o that_o be_v to_o discover_v the_o colour_n magnitude_n shape_v and_o motion_n of_o distant_a object_n and_o in_o that_o admirable_a perforation_n of_o the_o wea_fw-mi which_o we_o call_v the_o pupil_n nature_n have_v much_o outdo_v art._n for_o whereas_o we_o be_v fain_o to_o apply_v to_o the_o object_n glass_n of_o telescope_n opacous_a body_n with_o several_a circular_a aperture_n that_o some_o may_v let_v in_o less_o light_n and_o other_o more_o according_a as_o the_o object_n be_v more_o or_o less_o bright_a or_o enlighten_v that_o part_n of_o the_o wea_fw-mi that_o hang_v in_o the_o aqueous_a humour_n be_v a_o aperture_n as_o the_o artist_n call_v it_o that_o narrows_n and_o open_v itself_o in_o a_o trice_n according_a to_o the_o exigency_n of_o the_o object_n we_o look_v on_o which_o if_o they_o be_v so_o constitute_v or_o place_v that_o they_o reflect_v but_o a_o dim_a light_n the_o curtain_n be_v present_o draw_v open_a and_o the_o pupil_n circular_o widen_v to_o let_v in_o the_o more_o beam_n of_o light_n and_o the_o contrary_a happen_v as_o often_o as_o the_o object_n be_v too_o luminous_a or_o illustrate_v will_v offend_v the_o organ_n or_o disturb_v the_o sight_n if_o the_o contraction_n of_o the_o pupil_n do_v not_o shut_v out_o some_o of_o its_o beam_n but_o for_o the_o use_v of_o the_o several_a part_n of_o the_o eye_n i_o shall_v refer_v you_o to_o the_o industrious_a jesuit_n scheiner_n oculus_fw-la and_o des_n cartes_n his_o excellent_a dioptric_n where_o you_o will_v easy_o perceive_v that_o in_o frame_v the_o eye_n nature_n do_v not_o only_o act_v with_o design_n but_o with_o so_o much_o skill_n in_o optic_n that_o a_o more_o than_o ordinary_a insight_n into_o that_o science_n be_v necessary_a to_o understand_v the_o wisdom_n of_o the_o contrivance_n and_o perhaps_o no_o degree_n of_o skill_n in_o it_o will_v enable_v a_o man_n to_o alter_v they_o for_o the_o better_a it_o be_v tedious_a to_o mention_v the_o other_o part_n of_o the_o body_n that_o manifest_o appear_v to_o have_v be_v preordain_v to_o certain_a uses_n the_o book_n of_o anatomist_n be_v full_a of_o passage_n applicable_a to_o this_o purpose_n of_o which_o i_o shall_v say_v in_o general_a that_o though_o what_o they_o deliver_v suffice_v to_o show_v that_o all_o the_o part_n of_o the_o body_n be_v the_o effect_n of_o a_o intelligent_a cause_n yet_o unless_o their_o description_n and_o reflection_n be_v improve_v by_o man_n verse_v in_o mathematics_n and_o mechanic_n and_o i_o shall_v venture_v to_o add_v in_o chemistry_n too_o we_o shall_v but_o imperfect_o understand_v how_o intelligent_a that_o cause_n be_v or_o how_o much_o wisdom_n it_o have_v display_v in_o the_o structure_n of_o a_o human_a body_n and_o each_o of_o its_o part_n i_o know_v it_o be_v object_v by_o the_o epicurean_o ibid._n illud_fw-la in_o his_o rebus_fw-la vitium_fw-la uchementer_fw-la inesto_fw-la effugere_fw-la illorumque_fw-la errorem_fw-la premeditemur_fw-la lumina_fw-la qui_fw-la faciunt_fw-la oculorum_fw-la clara_fw-la creata_fw-la prospicere_fw-la ut_fw-la possimus_fw-la lucret._n de_fw-fr nat._n l._n four_o nihil_fw-la ideo_fw-la quoniam_fw-la natum_fw-la est_fw-la in_o corpore_fw-la ut_fw-la uti_fw-la possemus_fw-la sed_fw-la quod_fw-la natum_fw-la est_fw-la id_fw-la procreate_v usum_fw-la ibid._n that_o the_o part_n of_o animal_n be_v first_o make_v and_o their_o uses_n afterward_o find_v out_o by_o man_n sagacity_n but_o this_o be_v a_o sophistical_a objection_n for_o first_o as_o to_o many_o of_o the_o inner_a part_n as_o the_o heart_n liver_n spleen_n kidney_n &c_n &c_n they_o perform_v their_o functious_a without_o so_o much_o as_o our_o knowledge_n of_o their_o structure_n or_o perhaps_o their_o situation_n so_o far_o be_v they_o from_o be_v apply_v to_o such_o use_v by_o our_o sagacity_n and_o as_o for_o the_o limb_n and_o other_o part_n which_o we_o can_v move_v at_o pleasure_n it_o be_v true_a that_o they_o can_v be_v actual_o employ_v to_o the_o respective_a uses_n till_o they_o be_v actual_o form_v but_o that_o hinder_v not_o but_o that_o in_o their_o formation_n they_o be_v therefore_o so_o form_v that_o they_o may_v be_v in_o due_a time_n fit_a for_o such_o use_v and_o therefore_o we_o see_v that_o the_o chick_n be_v furnish_v 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