▁find ▁it ▁so ▁easy ▁as ▁I ▁expected ." ▁He ▁ordered ▁a ▁clin ometer , ▁and ▁on ▁ 1 1 ▁July ▁wrote ▁to ▁tell ▁H ens low ▁that ▁it ▁had ▁arrived ▁and ▁he ▁had ▁tried ▁it ▁out ▁in ▁his ▁bed room . ▁" As ▁yet ▁I ▁have ▁only ▁indul ged ▁in ▁hypoth eses ; ▁but ▁they ▁are ▁such ▁powerful ▁ones , ▁that ▁I ▁suppose , ▁if ▁they ▁were ▁put ▁into ▁action ▁but ▁for ▁one ▁day , ▁the ▁world ▁would ▁come ▁to ▁an ▁end ." ▁In ▁efforts ▁to ▁learn ▁the ▁bas ics ▁of ▁ge ology ▁he ▁extended ▁his ▁mapping ▁of ▁str ata ▁as ▁far ▁away ▁as ▁L lan ym y ne ch , ▁some ▁ ▁from ▁Sh rew s bury , ▁using ▁the ▁termin ology ▁he ▁had ▁lear nt ▁in ▁Edinburgh ▁from ▁Robert ▁James on . ▁Al ready ▁he ▁was ▁anxious ▁that ▁he ▁had ▁not ▁heard ▁from ▁Sed g wick , ▁and ▁when ▁he ▁investig ated ▁ship ▁sail ings ▁he ▁found ▁that ▁they ▁were ▁only ▁available ▁in ▁certain ▁months . ▁For ▁this ▁reason , ▁the ▁trip ▁to ▁T ener iffe ▁had ▁to ▁be ▁post pon ed ▁to ▁the ▁following ▁June , ▁and ▁it ▁looked ▁increasing ly ▁unlikely ▁that ▁H ens low ▁would ▁come ▁on ▁the ▁trip . ▁Dar win ▁wrote ▁to ▁one ▁of ▁his ▁student ▁friends ▁that ▁he ▁was ▁" at ▁present ▁mad ▁about ▁Ge ology " ▁and ▁had ▁plans ▁to ▁ride ▁through ▁Wales ▁then ▁meet ▁with ▁other ▁students ▁at ▁Bar mouth . ▁ ▁On ▁ 4 ▁August ▁ 1 8 3 1 ▁Sed g