en　the　engineer　stood　still；　Harry　Ford　stopped　also。　The　young　miner　waited　in　silence。 He　felt　what　was　passing　in　his　panion's　mind；　and　he　shared　his　feelings；　he；　a　child　of　the　mine；　whose　whole　life　had　been　passed　in　its　depths。

〃Yes；　Harry；　it　is　all　changed；〃　said　Starr。 〃But　at　the　rate　we　worked；　of　course　the　treasures　of　coal　would　have　been　exhausted　some　day。　Do　you　regret　that　time？〃

〃I　do　regret　it；　Mr。　Starr；〃　answered　Harry。 〃The　work　was　hard；　but　it　was　interesting；　as　are　all　struggles。〃

〃No　doubt；　my　lad。 A　continuous　struggle　against　the　dangers　of　landslips；　fires；　inundations；　explosions　of　firedamp；　like　claps　of　thunder。 One　had　to　guard　against　all　those　perils！ You　say　well！　It　was　a　struggle；　and　consequently　an　exciting　life。〃

〃The　miners　of　Alva　have　been　more　favored　than　the　miners　of　Aberfoyle；　Mr。　Starr！〃

〃Ay；　Harry；　so　they　have；〃　replied　the　engineer。

〃Indeed；〃　cried　the　young　man；　〃it's　a　pity　that　all　the　globe　was　not　made　of　coal；　then　there　would　have　been　enough　to　last　millions　of　years！〃

〃No　doubt　there　would；　Harry；　it　must　be　acknowledged；　however；　that　nature　has　shown　more　forethought　by　forming　our　sphere　principally　of　sandstone；　limestone；　and　granite；　which　fire　cannot　consume。〃

〃Do　you　mean　to　say；　Mr。　Starr；　that　mankind　would　have　ended　by　burning　their　own　globe？〃

〃Yes！ The　whole　of　it；　my　lad；〃　answered　the　engineer。　〃The　earth　would　have　passed　to　the　last　bit　into　the　furnaces　of　engines；　machines；　steamers；　gas　factories；　certainly；　that　would　have　been　the　end　of　our　world　one　fine　day！〃

〃There　is　no　fear　of　that　now；　Mr。　Starr。 But　yet；　the　mines　will　be　exhausted；　no　doubt；　and　more　rapidly　than　the　statistics　make　out！〃