﻿ACADEMY 
  OF 
  SCIENCES, 
  137 
  

  

  addition 
  to 
  this 
  we 
  propose 
  to 
  place 
  a 
  small 
  vertical 
  arc 
  and 
  attached 
  level, 
  to 
  

   give 
  the 
  angle 
  of 
  incliuation 
  ; 
  by 
  which, 
  with 
  the 
  distance, 
  the 
  difference 
  of 
  

   height 
  between 
  the 
  object 
  and 
  observer 
  may 
  be 
  obtained. 
  

  

  Regular 
  Meeting, 
  August 
  4th, 
  1873. 
  

   Prof. 
  J. 
  D. 
  Whitney 
  in 
  the 
  Chair. 
  

  

  Thirty-two 
  members 
  present. 
  

  

  David 
  J. 
  Staples, 
  Solomon 
  Goldsmith, 
  Alfred 
  Wheeler, 
  Albert 
  

   Williams, 
  Jr., 
  and 
  R. 
  D. 
  Plummer, 
  M.D., 
  were 
  elected 
  resident 
  

   members. 
  

  

  Donations 
  to 
  Library: 
  Proceedings 
  of 
  Royal 
  Geographical 
  Society, 
  Vol. 
  

   XVII, 
  No. 
  II. 
  Proc. 
  Boston 
  Nat. 
  Hist. 
  Society, 
  Vol. 
  XV, 
  Part 
  II. 
  Memoirs 
  

   of 
  Boston 
  Nat. 
  Hist. 
  Society, 
  Vol. 
  II. 
  Catalogue 
  of 
  the 
  Museum 
  of 
  the 
  

   Chicago 
  Medical 
  College. 
  Transactions 
  of 
  the 
  Academy 
  of 
  Science 
  of 
  St. 
  

   Louis, 
  Vol. 
  Ill, 
  No. 
  I, 
  1873. 
  Proc. 
  Acad. 
  Nat. 
  Sciences, 
  Phila., 
  pp. 
  249-280, 
  

   1873. 
  Si.vth 
  Annual 
  Report 
  of 
  the 
  Peabody 
  Institute 
  of 
  Baltimore, 
  1873. 
  

   California 
  Horticulturist, 
  July, 
  1873, 
  from 
  Publishers. 
  American 
  Journal 
  of 
  

   Science 
  and 
  Arts, 
  July, 
  1873. 
  American 
  Naturalist, 
  July, 
  1873. 
  American 
  

   Chemist, 
  June, 
  July, 
  1873. 
  Climats, 
  Geologic, 
  Faune 
  et 
  Geographic, 
  Botan- 
  

   ique 
  du 
  Bresil, 
  par 
  Emmanuel 
  Liais, 
  8vo., 
  Paris, 
  1872, 
  from 
  the 
  Brazilian 
  

   Legation 
  to 
  the 
  United 
  States. 
  Engineering 
  and 
  Mining 
  Journal 
  (5 
  papers) 
  

   for 
  July, 
  1873. 
  Mittheilungen 
  der 
  Deutschen 
  Gesellschaft 
  fur 
  Natur 
  und 
  Volk- 
  

   erkunde, 
  Ost-Asien's, 
  Yokohama, 
  Mai, 
  1873. 
  Report 
  of 
  the 
  Geological 
  Survey 
  

   of 
  New 
  Hampshire 
  for 
  1872, 
  from 
  C. 
  H. 
  Hitchcock, 
  Ph. 
  D. 
  Monatsbericht 
  

   der 
  Konighlich 
  Preuss, 
  Akad. 
  der 
  Wissenchaften 
  zu 
  Berlin, 
  Feb., 
  1873. 
  Yale 
  

   College 
  in 
  1873, 
  Pamph., 
  8vo. 
  Catalogue 
  Library 
  Company 
  of 
  Philadelphia, 
  

   July, 
  1873. 
  Publications 
  of 
  the 
  Geological 
  Survey 
  of 
  the 
  State 
  of 
  California, 
  

   as 
  follows: 
  Mining 
  Statistics, 
  No. 
  1, 
  1866; 
  Geographical 
  Catalogue 
  of 
  the 
  

   Mollusca, 
  1867 
  ; 
  Catalogue 
  of 
  the 
  Invertebrate 
  Fossils 
  of 
  the 
  Western 
  Slope 
  

   of 
  the 
  United 
  States, 
  Part 
  II, 
  1871 
  ; 
  The 
  Yosemite 
  Guide 
  Book, 
  1870 
  ; 
  The 
  

   Yosemite 
  Guide 
  Book 
  (Pocket 
  Ed.), 
  1871. 
  Palaeontology, 
  Vol. 
  I, 
  1864 
  ; 
  Vol. 
  

   11,1869. 
  Geology, 
  Vol. 
  I, 
  1865. 
  Ornithology, 
  Vol. 
  I, 
  1870. 
  Map 
  of 
  the 
  

   region 
  adjacent 
  to 
  the 
  Buy 
  of 
  San 
  Francisco, 
  1873. 
  Topographical 
  Map 
  of 
  

   Central 
  California, 
  etc., 
  1873 
  ; 
  all 
  of 
  the 
  above 
  presented 
  by 
  the 
  State. 
  

  

  Additions 
  to 
  Library 
  by 
  Purchase: 
  Journal 
  of 
  Botany 
  for 
  July, 
  1873. 
  

   Annals 
  and 
  Magazine 
  of 
  Natural 
  History, 
  July, 
  1873, 
  Popular 
  Science 
  

   Monthly, 
  August, 
  1873. 
  Nature, 
  June 
  5th, 
  26th, 
  July 
  3d, 
  10th, 
  1873. 
  An- 
  

   nalen 
  der 
  Physik 
  und 
  Chemie, 
  No. 
  4, 
  Leipzig, 
  1873. 
  Quarterly 
  Journal 
  of 
  

   Microscopical 
  Sciences, 
  London, 
  July, 
  1873. 
  

  

  