64 BOTANICAL GAZETTE 



* 



, relation to each other; the slight differences-apart from hor 

 are such as might be expected to arise in specific isolation. 



[JANUARY 



system 



v i j . u / Jlwu ^ A ^itemization wmcn nas 



been evolved in one part of the body is transferred, ready made, to 

 another part. The great mass of instances are of the class called 



are 



mean 



suddenly appearing deviations from the 



Monstros 



customary 



know 



exhibit, 



, . 'J — V*l m«XL SUCH clllU. bUCIl 



plants have arisen in the midst of normal relatives. They exnitm, 

 as has been said, discontinuous or saltatory variation. That homoe- 

 otic monstrosities typify homoeosis in general, as a saltation phe- 

 ZT* !!!, ^.^ fr0m f he «* ~tu« of the process. When, 



norm 



augment 



rvJi^*-- r -i ttugincnL me steaaiiy increasing 



fcces CV f ° r dkcontinui 'y «« '«e origin of specific 



Homoeotic changes may 



mu 



mutations 



O^rwu - 1 ° vvltli Lue mutations exhibited by tne 



transformatio 



pu..,^^ u . , — UUW1UC U1 any law ot tne evolution oi 



seems 



common. Mutation 



stratum * • • HUBUlflUVC t-nange in tne inheritable sud- 



m rldLn w " , a 'T J Wh " e in homoeosis «o ™w qualities are 

 mtodu ed , but only old characters are recombined, or characters are 



Homoeotic 

 mutation 



evoked ,„ a new sequence in development. 



V™L ar l mdeed ; f ° U , nd am ° ng the instan « s OI ™>""ion •■"■ - 

 wrf^iT Th Jf V***"*^ (for example, peloric £*-* 



JiTf ZL ^ haV ! '° be Classified "^ this author's <fe^«- 



Zrt^t" g ^ 46l> B 2 ' a) - Yet thdr ; - Iu -on - a classifi- 

 *?, ^ff ° f Vanatlons u "der mutation seems to rest on purely 



formal 



num J^Vt a ,s 0f of h onr SiS ^ ** deSCriptive P Ur P 0SeS a grW ' 



tacts of ontogenesis which, even though they may not 



