, ▁such ▁as ▁J . ▁G . ▁von ▁Her der , ▁expressed ▁similar ▁ideas . ▁ ▁Between ▁ 1 6 0 3 ▁and ▁ 1 6 1 3 ▁Sir ▁Walter ▁R ale igh ▁was ▁a ▁prisoner ▁in ▁the ▁Tower ▁of ▁London ▁await ing ▁execution ; ▁in ▁this ▁period ▁he ▁wrote ▁a ▁history ▁of ▁the ▁world ▁in ▁five ▁volumes ▁where ▁he ▁described ▁his ▁American ▁experiences ▁and ▁advent ures , ▁in ▁it ▁he ▁wonder ed ▁whether ▁all ▁the ▁new ▁species ▁discovered ▁in ▁the ▁new ▁continent ▁could ▁have ▁found ▁their ▁place ▁on ▁No ah ' s ▁Ark . ▁A ▁very ▁serious ▁question ▁at ▁the ▁time , ▁he ▁post ul ates ▁that ▁only ▁animals ▁from ▁the ▁old ▁continent ▁found ▁place ▁on ▁the ▁Ark ; ▁eventually , ▁after ▁the ▁Flo od , ▁some ▁of ▁these ▁animals ▁would ▁migr ate ▁to ▁the ▁new ▁continent ▁and , ▁under ▁environmental ▁pressure , ▁change ▁their ▁appearances ▁to ▁create ▁new ▁species . ▁Fif ty ▁years ▁later , ▁Matthew ▁H ale ▁went ▁even ▁further , ▁and ▁said ▁that ▁only ▁the ▁pro tot ypes ▁of ▁all ▁animal ▁species ▁were ▁wel com ed ▁on ▁the ▁Ark ; ▁these ▁would ▁eventually ▁differenti ate ▁after ▁their ▁release . ▁Many ▁cl erg ymen ▁were ▁happy ▁with ▁R ale igh ▁and ▁H ale ▁ideas ▁since ▁they ▁appeared ▁to ▁solve ▁the ▁problem ▁of ▁the ▁Ark ' s ▁t onn age . ▁ ▁Mid ▁ 1 8 th ▁century ▁In ▁his ▁Ven us ▁Phys ique ▁in ▁ 1 7 4 5 , ▁and ▁System ▁of ▁Nature ▁in ▁ 1 7 5 1