INTRODUCTION. 



XI 



Dr. Hauchecorne, Director of the 

 School of Mines, 



Dr. Helmholtz, Professor of Physics, 

 F.R.S. 



Dr. Kiepert, Professor of Geo- 

 graphy. 



Dr. G. Kirchhoff, Professor of Phy- 

 sics, F.R.S. 



Dr. Kronecker, Professor of Mathe- 

 matics. 



Dr. C. D. Martius, Chemist. 



Von Morozowicz, General. 



Dr. Neumayer, Hydrographer of the 

 Imperial Admiralty. 



Dr. Reuleaux, Director of the Poly- 

 technic Academy. 



Dr. Schellbach, Professor of Mathe- 

 matics. 



Dr. Werner Siemens, Telegraphic 

 Engineer. 



Dr. Virchovr, Professor of Patho- 

 logy. 



Dr. C. H. Vogel, Astronomer. 



Dr. Websky, Professor of Minera- 

 logy. 



II. COMMITTEE REPRESENTING OTHER CITIES AND TOWNS OF 

 GERMANY. 



Dr. Von Babo, Professor of Che- 

 mistry, Freiburg. 



Dr. Beetz, Professor of Physics, 

 Munich. 



Dr. Buff, Professor of Physics, Gies- 

 sen. 



Dr. Clausius, Professor of Physics, 

 Bonn, F.R.S. 



His Excellency Dr. Von Dechen, 

 Director of the Mining Depart- 

 ment, Bonn. 



Dr. Von Fehling, Professor of Che- 

 mistry, Stuttgart. 



Dr. Von Feilitzsch, Professor of 

 Physics, Greifswald. 



Dr. Graebe, Professor of Chemistry, 

 Konigsberg. 



Dr. Von Groddeck, Director of the 

 School of Mines, Klausthal. 



Dr. Heeren, Professor of Chemistry, 

 Hanover. 



Dr. Hittorf, Professor of Chemistry, 

 Miinster. 



Dr. Karsten, Professor of Physics, 

 Kiel. 



Dr. Karsten, Professor of Physics, 

 Rostock. 



Dr. Knapp, Professor of Chemistry, 

 Braunschweig. 



Dr. Knoblauch, Professor of Physics, 

 Halle. 



Dr. Kolliker, Professor of Physiology, 

 Wiirzburg, F.R.S. 



Dr. Kundt, Professor of Physics, 

 Strasburg. 



Dr. Launhardt, Director of the Poly- 

 technic School, Hanover. 



Dr. Mohl, Cassel. 



Dr. Poleck, Professor of Chemistry, 

 Breslau. 



Dr. Preyer, Professor of Physiology, 

 Jena. 



Dr. Von Quintus-Icilius, Professor 

 of Physics, Hanover. 



Dr. Reusch, Professor of Physics, 

 Tubingen. 



Dr. Romberg, Professor in the Nau- 

 tical School, Bremen. 



Dr. Rosenthal, Professor of Physio- 

 logy, Erlangen. 



Dr. Riimker, Director of the Obser- 

 vatory, Hamburg. 



Dr. Serlo, Director of the Mining 

 Department, Breslau. 



Dr. C. Von Siemens, Professor in 

 the Agricultural Academy, Hohen- 

 heim. 



His Excellency Dr. Von Steinbeis, 

 President, Stuttgart. 



Dr. W. Weber, Professor of Physics, 

 Gottingen, F.R.S. 



Dr. Wiedemann, Professor of Phy- 

 sical Chemistry, Leipzig. 



Dr. Winkler, Professor of Metal- 

 lurgy, Freiberg. 



Dr. Wohler, Professor of Chemistry, 

 Gottingen, F.R.S. 



Dr. Wullner, Professor of Physics, 

 Aachen. 



Dr. Zeuner, Director of the Poly- 

 technic School, Dresden. 



Dr. Zetzsche, Director of the Poly- 

 technic School, Chemnitz. 



