▁out ings ▁were ▁attended ▁by ▁ 7 8 ▁men ▁including ▁professor ▁Whe well . ▁Charles ▁became ▁the ▁" f av our ite ▁pup il ", ▁known ▁as ▁" the ▁man ▁who ▁wal ks ▁with ▁H ens low ", ▁helping ▁to ▁find ▁spec im ens ▁and ▁to ▁set ▁up ▁" p ract ical s " ▁dis sect ing ▁plants . ▁He ▁became ▁interested ▁in ▁pol len . ▁One ▁day ▁he ▁watched ▁through ▁a ▁mic ros cope ▁and ▁saw ▁" trans parent ▁con es " ▁emer ge ▁from ▁the ▁side ▁of ▁a ▁ger an ium ▁pol len ▁gra in . ▁Then ▁one ▁burst ▁sp ray ing ▁out ▁" number less ▁gran ules ". ▁H ens low ▁explained ▁that ▁the ▁gran ules ▁were ▁indeed ▁the ▁constitu ent ▁atoms ▁of ▁pol len , ▁but ▁they ▁had ▁no ▁intr insic ▁vital ▁power ▁– ▁life ▁was ▁end owed ▁from ▁outside ▁and ▁ultimately ▁derived ▁its ▁power ▁from ▁God , ▁whatever ▁more ▁" spe cul ative " ▁natural ists ▁argued ▁regarding ▁self - activ ating ▁power . ▁Dar win ▁had ▁been ▁taught ▁otherwise ▁by ▁Grant , ▁and ▁reflected ▁quietly ▁on ▁this , ▁b iding ▁his ▁time . ▁ ▁For ▁the ▁summer ▁hol id ays ▁Dar win ▁arranged ▁to ▁meet ▁Fox ▁at ▁The ▁Mount , ▁but ▁Dar win ' s ▁father ▁had ▁been ▁ill ▁and ▁family ▁t ensions ▁led ▁to ▁a ▁row . ▁Charles ▁went ▁off ▁with ▁the ▁Rev d . ▁Hope ▁and ▁other ▁friends ▁for ▁three ▁weeks ▁" ent om olog izing " ▁in ▁North ▁Wales , ▁hunting ▁for ▁be et