In that case a mining lease contained an agreement to refer the disputes between the lessors and lessees to arbitrators or their umpire and the arbitration clause was very widely worded so as to include inter alia any dispute "touching these presents or any clause or matter or the thing herein contained or the construction hereof", in other words a dispute between the parties as to whether the instrument, according to its true construction did or did not warrant a particular thing to be done thereunder, was referable to and within the scope and authority of the arbitrators and at page 477 of the Report Lord Selborne, L.C. observed (which observations have been quoted with the approval by Lord Porter in Heyman vs Darwins Ltd.) thus: "It struck me throughout that the endeavour of the Appellants has been to require this Court to do the very thing which the arbitrators ought to do that is to say, to look into the whole matter, to construe the instrument, and to decide whether the thing which is complained of its inside or outside of the agreement.