﻿ACADKMY 
  OF 
  SCIENCES. 
  12o 
  

  

  mcrribf-rH 
  of 
  f-aoh 
  living 
  to;.'f-lhf-r 
  in 
  riurncrou.s 
  localitic-H 
  throughout 
  the 
  range 
  of 
  

   botli, 
  witliout 
  int<;nnc(Jiatc 
  lormn. 
  

  

  TJIK 
  JMW 
  OK 
  VAK/ATJOM. 
  

  

  The 
  biological 
  law 
  deflucible 
  from 
  the 
  preceding 
  fact<j 
  in, 
  that 
  those 
  Bf»ecie3, 
  

   Bub-«peci<'8, 
  anr] 
  varieti(.*8 
  living 
  in 
  cool, 
  r]amp 
  fiituations, 
  become 
  more 
  highly 
  

   develop'-f] 
  (t»ut 
  not 
  alwayn 
  larger) 
  than 
  the 
  others, 
  the 
  Hheil 
  as-'uming 
  a 
  more 
  

   compact 
  Hinperforate) 
  form, 
  anf] 
  jfwing 
  those 
  indicationfi 
  of 
  immaturity 
  referred 
  

   to, 
  viz 
  : 
  Hharyj, 
  delicate 
  sculpture, 
  bristlfis, 
  and 
  angular 
  periphery. 
  

  

  These 
  characlerinticH, 
  however, 
  remain 
  more 
  or 
  Urs-i 
  pf;rmanently 
  for 
  indefinite 
  

   periods, 
  and 
  give 
  that 
  fixedness 
  to 
  the 
  various 
  forms, 
  even 
  when 
  living 
  under 
  

   the 
  same 
  conditions, 
  which 
  enables 
  us 
  to 
  retain 
  them 
  as 
  suh-xpecieH, 
  difP-ring 
  

   from 
  varidiei 
  in 
  permanency, 
  and 
  from 
  racef 
  in 
  not 
  inhabiting 
  distinct 
  regions. 
  

   Ariorila 
  urroHn 
  and 
  Lipiaoe 
  Dupetitliouard 
  are 
  thus 
  the 
  highf.-st 
  developed 
  of 
  

   either 
  group 
  in 
  California. 
  

  

  The 
  President 
  informed 
  the 
  Academy 
  that 
  Mr. 
  C. 
  E. 
  Watkin3, 
  

   the 
  well-known 
  photo;^rapher, 
  had 
  generously 
  oflR:;red 
  to 
  make 
  pho- 
  

   tographs, 
  cabinet 
  size, 
  of 
  all 
  the 
  members, 
  and 
  present 
  a 
  copy 
  of 
  

   each 
  to 
  the 
  Academy, 
  provided 
  that 
  they 
  would 
  furnish 
  a 
  suitable 
  

   album 
  for 
  their 
  preservation. 
  

  

  PtEGULAu 
  Meeting, 
  Jcly 
  21.st, 
  1873. 
  

   President 
  in 
  the 
  Chair. 
  

  

  Thirty-six 
  members 
  present. 
  

  

  Dr. 
  J. 
  C. 
  Horner 
  de 
  Tavel, 
  of 
  Oakland, 
  and 
  A. 
  Gros, 
  were 
  

   elected 
  resident 
  members, 
  and 
  H. 
  II. 
  Moore 
  and 
  D. 
  0. 
  Mills, 
  life 
  

   members. 
  

  

  Donations 
  to 
  Library 
  : 
  Soci^'d 
  des 
  Arts 
  et 
  des 
  Scienw^ 
  of 
  Batavia, 
  Ver- 
  

   handdingen. 
  Vol, 
  XXXIV 
  et 
  XXXV; 
  Tijdsr^hrift 
  XVIII, 
  1, 
  2, 
  'S, 
  XX, 
  1, 
  2 
  ; 
  

   Notulen 
  VIII, 
  3, 
  4, 
  iX, 
  1871. 
  Beitrag 
  zur 
  Kenntniss 
  der 
  Insekten-Fauna 
  des 
  

   Kantons 
  Ziirich 
  ; 
  Kafer 
  von 
  Kaspar 
  Dietrich 
  ; 
  4to., 
  Zurich, 
  1805; 
  from 
  H. 
  

   Erni, 
  U. 
  S. 
  Consul. 
  The 
  Principle 
  of 
  Least 
  Action 
  in 
  Nature, 
  etc., 
  etc,, 
  by 
  

   the 
  Rev. 
  Samuel 
  Ilaughton, 
  pamph. 
  8vo,, 
  London, 
  1871 
  ; 
  from 
  the 
  author. 
  

   R. 
  Comitato 
  Geologico 
  d'ltalia, 
  Nov. 
  and 
  Dec, 
  1872, 
  Jan. 
  and 
  Feb., 
  187-3. 
  

   Rapport 
  sur 
  lea 
  Progres 
  recents 
  des 
  Sciences 
  Zooiogiques 
  en 
  France, 
  par 
  M. 
  

  

  