﻿Ward's 
  Natural 
  Science 
  Establishment 
  

  

  A 
  Supply-House 
  for 
  Scientific 
  Material. 
  

  

  Founded 
  1862. 
  Incorporated 
  1890. 
  

  

  A 
  few 
  of 
  our 
  recent 
  circulars 
  in 
  the 
  various 
  

   departments 
  : 
  

  

  Geology: 
  J-3. 
  Genetic 
  Collection 
  of 
  Rocks 
  and 
  Rock- 
  

   forming 
  Minerals. 
  J-188. 
  Price 
  List 
  of 
  Rocks. 
  

  

  Mineralogy: 
  J-109. 
  Blowpipe 
  Collections. 
  J-74. 
  Meteor- 
  

   ites. 
  J-190. 
  Collections. 
  J-197. 
  Fine 
  Specimens. 
  

  

  Paleontology: 
  J-185. 
  Complete 
  Trilobites. 
  J-115. 
  Collec- 
  

   tions. 
  J-140. 
  Restorations 
  of 
  Extinct 
  Arthropods. 
  

  

  Entomology: 
  J-33. 
  Supplies. 
  J-125. 
  Life 
  Histories. 
  

   J-198. 
  Live 
  Pupae. 
  

  

  Zoology: 
  J-116. 
  Material 
  for 
  Dissection. 
  J-26. 
  Compara- 
  

   tive 
  Osteology. 
  J-94. 
  ' 
  Casts 
  of 
  Reptiles, 
  etc. 
  

  

  Microscope 
  Slides: 
  J-189. 
  Slides 
  of 
  Parasites. 
  Cat. 
  32 
  

   and 
  35. 
  Rocks. 
  

  

  Taxidermy: 
  J-22. 
  Bird 
  Skins. 
  J,-31. 
  Mammal 
  Skins. 
  

  

  Human 
  Anatomy: 
  J-16. 
  Skeletons 
  and 
  Models. 
  

  

  General: 
  J-193. 
  List 
  of 
  Catalogues 
  and 
  Circulars. 
  

  

  Ward's 
  Natural 
  Science 
  Establishment 
  

  

  84-102 
  College 
  Ave., 
  Rochester, 
  N. 
  Y., 
  V. 
  S. 
  A. 
  

  

  "SCIENTIA" 
  

  

  INTERNATIONAL 
  REVIEW 
  OF 
  SCIENTIFIC 
  SYNTHESIS. 
  Issued 
  monthly 
  (each 
  

   number 
  consisting 
  of 
  100 
  to 
  120 
  pages). 
  Editor 
  : 
  EUGENIO 
  RIGNANO. 
  

  

  This 
  is 
  the 
  only 
  review 
  which 
  has 
  a 
  really 
  international 
  collaboration 
  ; 
  which 
  is 
  

   of 
  world-wide 
  circulation 
  and 
  occupies 
  itself 
  with 
  the 
  synthesis 
  and 
  unification 
  of 
  

   knowledge, 
  in 
  the 
  history 
  of 
  the 
  sciences, 
  mathematics, 
  astronomy, 
  geology, 
  physics, 
  

   chemistry, 
  biology, 
  psychology 
  and 
  sociology. 
  

  

  This 
  Review 
  studies 
  all 
  the 
  most 
  important 
  questions— 
  demographic, 
  ethnographic, 
  

   economic, 
  financial,' 
  juridical, 
  historical, 
  political— 
  raised, 
  by 
  the 
  world 
  war. 
  

  

  It 
  has 
  published 
  articles 
  by 
  Messrs. 
  : 
  Abbot 
  =Arrhenius 
  =Ashley 
  - 
  Bayliss 
  - 
  Beichman 
  

   Bigourdan 
  = 
  Bohlin 
  - 
  Bohn 
  = 
  Bonne 
  sen 
  - 
  Borel 
  = 
  Booty 
  = 
  Bragg 
  = 
  Bruni 
  = 
  Burdick 
  = 
  Carver 
  - 
  

   Caullery 
  - 
  Chamberlin 
  - 
  Charlier 
  = 
  Claparede 
  - 
  Clark 
  - 
  Costantln 
  - 
  Crommelin 
  - 
  Crowter 
  = 
  

   Darwin 
  - 
  Delage 
  =-De 
  Vrles 
  - 
  Durkheim 
  = 
  Eddington 
  => 
  Edgeworth 
  - 
  Emery 
  = 
  Enriques 
  - 
  

   Fabry 
  - 
  FIndlay 
  - 
  Fisher 
  = 
  Fowler 
  = 
  Golgi 
  = 
  Gregory 
  = 
  Harper 
  - 
  Hartog 
  = 
  Helberg 
  - 
  tiinks- 
  

   Hopkins=Inigues=Innes=Janet=Kaptern=Kaye=Kidd-Langevin'=Lebedew=Lloyd 
  Morgan 
  = 
  

   Lodge 
  - 
  Loisy 
  =• 
  Lorentz 
  - 
  Loria 
  -Lowell 
  - 
  MacBride 
  =■ 
  Meillet 
  =Moret-Mulr=Peano 
  =Picard 
  = 
  

   Polncare 
  - 
  Puiseux 
  = 
  Rabaud 
  = 
  Rey 
  Pastor 
  = 
  Righi 
  =Rignano=Russell=Rutherf 
  ord=Sagnac 
  = 
  

   Sarton= 
  Schlaparelli 
  - 
  Scott 
  = 
  See 
  = 
  Sherrington 
  = 
  Soddy 
  = 
  Starling 
  = 
  Svedberg- 
  Thomson 
  = 
  

   Thorndike 
  -Turner 
  -Volterra 
  -Webb 
  -Weiss 
  -Zeeman-Zeuthen 
  and 
  more 
  than 
  a 
  hundred 
  

   others. 
  

  

  *• 
  SCIENTIA" 
  publishes 
  its 
  articles 
  in 
  the 
  language 
  of 
  its 
  authors, 
  and 
  joins 
  to 
  the 
  

   principal 
  text 
  a 
  supplement 
  containing 
  the 
  French 
  translations 
  of 
  all 
  the 
  articles 
  that 
  

   are 
  not 
  in 
  French. 
  ( 
  Write 
  for 
  a 
  Specimen 
  Number 
  to 
  the 
  General 
  Secretary 
  of 
  

   ik 
  Scientia 
  : 
  ', 
  Milan. 
  Annual 
  subscription 
  : 
  38 
  sh., 
  or 
  9.50 
  dollars 
  post 
  free. 
  

  

  Office 
  : 
  43 
  Foro 
  Bonaparte, 
  Milan, 
  Italy. 
  

  

  Publishers: 
  WILLIAMS 
  & 
  NORG 
  ATE 
  - 
  London 
  ; 
  FELIX 
  ALCAN- 
  Paris; 
  

   NICOLA 
  ZANICHELLI, 
  Bologna* 
  

  

  