And as we must look at the curious and complex laws governing the facility with which trees can be grafted on each other as incidental on unknown differences in their vegetative systems, so I believe that the still more complex laws governing the facility of first crosses are incidental on unknown differences in their reproductive systems.
Eta zuhaitzen txertatu ahal izateko erraztasuna erregulatzen duten lege bitxi eta konplexuak, sistema begetatiboan dituzten ezberdintasun ezezagunen mendekotzat jo behar ditugun moduan, halaxe, uste dut nik, lehen gurutzaketen erraztasuna erregulatzen duten lege are konplexuagoak ere, ugal-sisteman dituzten ezberdintasun ezezagunen mende daudela.