o　show　the　nature　of　the　gas；　which　escaped　in　a　small　jet；　but　with　a　continuous　flow。

An　hour　after　leaving　the　cottage；　James　Starr　and　his　two　panions　had　gone　a　distance　of　four　miles。 The　engineer；　urged　by　anxiety　and　hope；　walked　on　without　noticing　the　length　of　the　way。　He　pondered　over　all　that　the　old　miner　had　told　him；　and　mentally　weighed　all　the　arguments　which　the　latter　had　given　in　support　of　his　belief。　He　agreed　with　him　in　thinking　that　the　continued　emission　of　carburetted　hydrogen　certainly　showed　the　existence　of　a　new　coal…seam。　If　it　had　been　merely　a　sort　of　pocket；　full　of　gas；　as　it　is　sometimes　found　amongst　the　rock；　it　would　soon　have　been　empty；　and　the　phenomenon　have　ceased。 But