﻿552 
  J. 
  BBETLAND 
  FARMfclR 
  AND 
  J. 
  E. 
  S. 
  MOORE. 
  

  

  resulting 
  cells 
  might 
  receive 
  tlie 
  entire 
  lot 
  of 
  chromosomes 
  

   contributed 
  by 
  one 
  of 
  the 
  three 
  gametes 
  that 
  have 
  taken 
  

   part 
  in 
  the 
  previous 
  fusion. 
  In 
  such 
  a 
  case 
  a 
  normal 
  

   larva 
  might 
  result. 
  On 
  the 
  other 
  hand, 
  with 
  a 
  quadri- 
  

   polar 
  mitosis 
  such 
  a 
  sorting 
  would 
  be 
  almost 
  impossible. 
  

   Boveri 
  found 
  that 
  the 
  facts 
  accorded 
  well 
  with 
  the 
  hypothesis, 
  

   and 
  hence 
  concluded 
  that 
  the 
  normal 
  characters 
  of 
  the 
  

   larv^ 
  were 
  dependent 
  on 
  the 
  appropriate 
  distribution 
  of 
  the 
  

   chromosomes. 
  

  

  The 
  very 
  remarkable 
  results 
  obtained 
  from 
  crossing 
  

   hybrids 
  are 
  also 
  found 
  to 
  accord 
  very 
  well 
  with 
  the 
  view 
  

   of 
  the 
  chromosomes 
  regarded 
  as 
  persisting 
  individuals, 
  

   although, 
  of 
  course, 
  such 
  results 
  could 
  be 
  equally 
  well 
  

   accounted 
  for 
  on 
  the 
  supposition 
  that 
  there 
  exist 
  other 
  

   physical 
  entities 
  to 
  which 
  the 
  manifestation 
  of 
  specific 
  or 
  

   individual 
  characters 
  could 
  be 
  ascribed, 
  provided 
  they 
  could 
  

   be 
  shown 
  to 
  persist 
  and 
  to 
  be 
  equally 
  distributed 
  in 
  the 
  same 
  

   way 
  as 
  we 
  now 
  know 
  the 
  chromosomes 
  to 
  be. 
  But 
  failing 
  

   their 
  demonstration, 
  we 
  may 
  reasonably 
  admit 
  the 
  claims 
  of 
  

   the 
  chromosomes 
  to 
  represent 
  the 
  physical 
  machinery 
  to 
  the 
  

   operation 
  of 
  which 
  the 
  manifestation 
  of 
  the 
  characters 
  in 
  

   question 
  is 
  to 
  be 
  ascribed. 
  

  

  We 
  would, 
  however, 
  reiterate 
  here 
  the 
  reservation 
  made 
  

   by 
  us 
  already. 
  We 
  do 
  not 
  look 
  on 
  the 
  chromosomes 
  as 
  

   primordia 
  of 
  characters, 
  but 
  as 
  agents, 
  by 
  the 
  influence 
  

   of 
  which 
  on 
  the 
  rest 
  of 
  the 
  protoplasm 
  are 
  incepted 
  those 
  

   complex 
  physical 
  and 
  chemical 
  changes 
  that 
  culminate 
  in 
  the 
  

   production 
  of 
  the 
  individual 
  characters. 
  

  

  Too 
  many 
  cases 
  are 
  now 
  known 
  to 
  conform 
  to 
  the 
  

   Mendelian 
  rules 
  when 
  hybrids 
  of 
  the 
  first 
  (and 
  succeeding) 
  

   generations 
  are 
  interbred 
  with 
  each 
  other 
  for 
  the 
  results 
  

   to 
  be 
  a 
  mere 
  matter 
  of 
  chance 
  ; 
  and 
  they 
  point 
  strongly 
  in 
  

   the 
  direction 
  of 
  the 
  existence 
  of 
  a 
  structural, 
  rather 
  than 
  a 
  

   purely 
  dynamical, 
  combination 
  as 
  responsible 
  for 
  the 
  phe- 
  

   nomena 
  in 
  question. 
  

  

  Assuming 
  the 
  causes 
  responsible 
  for 
  the 
  characters 
  or 
  

   groups 
  of 
  characters 
  concerned 
  to 
  be 
  resident 
  in 
  the 
  chromo- 
  

  

  