. Guide leaflet. i Fig. 6. MANS HERITAGE FROM QUADRUPEDAL ANCESTORS. fish {Ceratodjis) with paired paddles. After Dean. Center. Fossil am-phibian (Eryops) from the Permian of Texas. Ahore. Human infant running on allfours. After Hrdlicka. Note the comparison between the paired paddles of the iish,the fore and hind limbs of the quadruped and the arms and legs of man C^-] SIL DENTS IN NATURIIS IRAININC; S( IIOOI. In the pres-ent and pastages of theearth Naturehas kept aphysical and mental training-school of manygrades. Her examinations havealways been practical ones, thepriz


. Guide leaflet. i Fig. 6. MANS HERITAGE FROM QUADRUPEDAL ANCESTORS. fish {Ceratodjis) with paired paddles. After Dean. Center. Fossil am-phibian (Eryops) from the Permian of Texas. Ahore. Human infant running on allfours. After Hrdlicka. Note the comparison between the paired paddles of the iish,the fore and hind limbs of the quadruped and the arms and legs of man C^-] SIL DENTS IN NATURIIS IRAININC; S( IIOOI. In the pres-ent and pastages of theearth Naturehas kept aphysical and mental training-school of manygrades. Her examinations havealways been practical ones, theprize of survival being awardedto the fittest in each succes-sive grade. In the primary school the lower grades werepassed through under water. Here one learned toswim and steer in the currents, to lurk quietly, tostrike successfully. A few grades further on thepupils were e(}uipped with air-sacs, so that theycould wriggle out on the banks and use their fore-and-hind paddles as limbs. After ac(}uiring the physique to withstand hard-ships of heat and cold, some of the more advancedcandidates were admitted to the school of the forestsand to the uncertainties of lifein the trees, where a practicalcourse in the care and feedingof infants was required of allmothers. At last thepupils ventur-ed out into theopen and wentinto trainingboth for shortsprints most intelligent ive terrestrialreptile and r mi «1 w j W^Sm :i ^H € w Lobe-hn


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectnatural, bookyear1901