Tucker, Alfred Robert
Schynse, August Wilhelm
Weeks, John Henry
Ramseyer, Fritz
Spillmann, Joseph
Baumann, Oscar
Rohlfs, Gerhard Friedrich
Kallenberg, Friedrich
Bode, Wilhelm
Flegel, Eduard Robert
Grimm, Carl
Klunzinger, Carl Benjamin
Heinersdorff, Carl
Barth, Hermann von
Baker, Samuel White
Gürich, Georg
Dinter, Karl
Hartung, Georg
Rust, Conrad