SOCIAL EVOLUTION 



VARIATION AND HKM.MTY 



ii that the offspring of 



j -hints and animals t.-n-i to resemble the particular in 

 dividual^ t'rom \\hich they have .sprung. " '1 '.' >>ungof 

 a horse is always a horse and n-\ . r a zebra. Wolves do 

 not give hirth in fo\-. Sunflowers will not grow from 

 thi-tle seed." ! Nature keeps things in order, or, as the 

 hiologist says, plants an<l annuals breed tin.-. We have 

 come to reganl this relation as an establi-hrd principle. 

 Hut iu Anri.'iit :.uil Medieval tinn-s many people believed 

 tliat certain plants transformed into animals. In tin- 

 Mi. Ml.- A-.-> they thought ihat tlie ha rnacle-goose orig- 



1 from the goose-barnacle. u r knowl- 



edge of natural law has so greatly increased that we are 

 al'i* t<> ass. -rt with utmost confidence that plants and 

 animals l.r-.-,l tm,-. 



:t an*! ntT>pring is of such a na- 



tun- that the \.iuni? usually liear a somewhat cloee re* 

 seinhlance t<> i u addition to sharing the 



i similarity <>t -trurtuiv and function which makes 

 thrm IM ImiLT t the same species as their parents. Thus 

 the resemblance is both detailed and general. The off- 



! are like their parents in such 

 :Wm. color, and amount of milk. 1 * 



iMetmlf. M. M. Ormmmio Svolmtio* 3rd fd.. 1911. n. S. 



>/ '^.. p. 6. 



