﻿10 
  v 
  Thirtieth 
  Report 
  on 
  the 
  State 
  Museum. 
  

  

  Some 
  time 
  has 
  necessarily 
  been 
  lost 
  in 
  experimenting, 
  and 
  

   much 
  time 
  has 
  been 
  required 
  in 
  adapting 
  the 
  machinery 
  to 
  the 
  

   work 
  ; 
  but 
  the 
  difficulties 
  seem 
  now 
  to 
  be 
  essentially 
  overcome. 
  

   Much 
  good 
  work 
  has 
  been 
  done 
  and 
  is 
  now 
  in 
  progress, 
  and 
  

   is 
  being 
  rapidly 
  accomplished. 
  

  

  I 
  need 
  scarcely 
  speak 
  of 
  the 
  importance 
  and 
  even 
  necessity 
  

   of 
  such 
  an 
  apparatus 
  in 
  connection 
  with 
  a 
  Museum 
  like 
  that 
  of 
  

   the 
  State 
  of 
  New 
  York. 
  The 
  study 
  of 
  the 
  microscopic 
  struc- 
  

   ture 
  of 
  rocks 
  and 
  fossils 
  has, 
  within 
  a 
  few 
  years, 
  become 
  an 
  

   essential 
  part 
  of 
  the 
  science, 
  and 
  facilities 
  of 
  this 
  kind 
  are 
  

   required. 
  . 
  

  

  Already 
  I 
  have 
  the 
  satisfaction 
  of 
  presenting 
  to 
  you 
  the 
  

   introductory 
  parts 
  of 
  two 
  papers, 
  by 
  assistants 
  in 
  the 
  Museum, 
  

   the 
  initiation 
  and 
  completion 
  of 
  which 
  have 
  been 
  and 
  will 
  be 
  

   greatly 
  dependent 
  upon 
  the 
  study 
  of 
  the 
  microscopic 
  structure 
  

   of 
  the 
  subjects 
  under 
  investigation. 
  One 
  of 
  these 
  papers 
  is 
  

   upon 
  the 
  Lithology 
  of 
  the 
  Adirondacks, 
  a 
  subject 
  of 
  great 
  

   interest 
  and 
  importance 
  to 
  us 
  in 
  ISTew 
  York 
  ; 
  and 
  by 
  means 
  of 
  

   which 
  we 
  may 
  be 
  able 
  to 
  learn 
  the 
  real 
  constitution 
  of 
  our 
  crys- 
  

   talline 
  rocks 
  and 
  to 
  compare 
  with 
  results 
  of 
  similar 
  studies 
  in 
  

   Europe, 
  where 
  they 
  are 
  now 
  made 
  with 
  great 
  perfection 
  by 
  aid 
  

   of 
  the 
  microscope. 
  

  

  The 
  other 
  paper 
  is 
  upon 
  the 
  microscopic 
  structure 
  of 
  some 
  

   examples 
  among 
  the 
  fossil 
  sponges 
  — 
  Petrospongia. 
  The 
  com- 
  

   mencement 
  of 
  this 
  paper 
  and 
  the 
  work 
  now 
  in 
  progress 
  at 
  the 
  

   Museum 
  give 
  promise 
  of 
  a 
  valuable 
  contribution 
  to 
  our 
  knowl- 
  

   edge 
  of 
  the 
  intimate 
  structure 
  and 
  relations 
  of 
  these 
  fossil 
  

   forms. 
  This 
  work 
  absolutely 
  requires 
  the 
  means 
  of 
  cutting, 
  

   grinding 
  and 
  polishing 
  sections 
  of 
  the 
  fossils. 
  

  

  I 
  hope 
  that 
  the 
  Committee 
  on 
  the 
  State 
  Museum 
  will 
  take 
  

   the 
  opportunity 
  to 
  satisfy 
  themselves 
  in 
  regard 
  to 
  this 
  addi- 
  

   tional 
  element 
  of 
  progress 
  in 
  the 
  Museum 
  work. 
  

  

  Arrangement 
  of 
  a 
  Collection 
  of 
  Aboriginal 
  Stone 
  Implements. 
  

  

  The 
  increasing 
  interest 
  manifested 
  in 
  Archaeological 
  subjects 
  

   has 
  lent 
  additional 
  value 
  to 
  the 
  aboriginal 
  remains, 
  which, 
  at 
  a 
  

   comparatively 
  recent 
  period, 
  abounded 
  in 
  many 
  parts 
  of 
  the 
  

   country. 
  

  

  The 
  Museum 
  has, 
  for 
  some 
  time, 
  possessed 
  numerous 
  very 
  

   interesting 
  aboriginal 
  stone 
  implements. 
  In 
  the 
  removal 
  of 
  the 
  

  

  