Samuel William Johnson
1877 · Good
€100
C. A. Johns
1870 · Good
€40
Justus von Liebig
1850 · Good
€80
Robert Bloomfield
1814 · Good
€175
Vries, Hugo de
1803 · Very good · NL
€235
Christiaan Lodewijk Houthuysen
1930 · Good · NL
€30
Charles Darwin
1931 · Good
€55
Neltje Blanchan
1906 · Very good
€70
K. F. Holle
1877 · Very good · NL
€95
Peter Kropotkin
1931 · Very good
€60
Frederick Orpen Bower
1934 · Good
€50
Ira Remsen
1888 · Very good
€120
Sir Humphry Davy
1827 · Good
€85
Howell, Thomas
1909 · Very good
€30
Goff, E. S.
1899 · Very good
€70
M. Büsgen
1897 · Good
€65
Grant Allen
1897 · Good
€80
Carl Linnaeus
1784 · Very good
€405
Patrick Geddes
1903 · Good
€70
Charles Darwin
1910 · Good
€85
J. Haak
1928 · Very good · NL
€30
Carlton C. Curtis
1907 · Fine
€50
Grant Allen
1884 · Good
€110
Johann Hermann Knoop
1824 · Very good · NL
€295
Adolf Engler
1917 · Good
€25
Snyder, Harry
1925 · Good
€20
Lewis F. Allen
1858 · Very good
€195
H. B. Spotton
1882 · Good
€50
Justus von Liebig
1844 · Very good
€220
Alexander von Humboldt
1876 · Very good
€150
William Withering
1849 · Fine
€435
Charles Darwin
1894 · Good
€45
William Withering
1801 · Very good
€195
Eduard Strasburger
1935 · Fine
€45
Frederick Orpen Bower
1935 · Good
€35
John Merle Coulter
1912 · Good
€55
Asa Gray
1871 · Very good
€120
Robert Chambers
1852 · Good
€160
Stijn Streuvels
1912 · Good · NL
€65
Sturm, Christoph Christian
1815 · Very good
€95
Julie Hoek
1930 · Very good · NL
€35
Priscilla Wakefield
1825 · Good
€140
Daniel Oliver
1872 · Good
€65
Charles W. Nash
1902 · Good
€25
Robert Chambers
1867 · Good
€120
Johannes Fredericus Gronovius
1742 · Good
€550
Alvan Wentworth Chapman
1896 · Good
€150
John Francis Campbell
1865 · Good
€50
Carl Linnaeus
1779 · Very good
€245
Mabel Osgood Wright
1903 · Good
€40
Jan van der Groen
1679 · Fine · NL
€1,250
André Gide
1931 · Very good
€25
Anton Kerner von Marilaun
1914 · Good
€65
W. Houghton
1876 · Good
€70
Alphonso Wood
1848 · Very good
€200
David Beveridge
1892 · Very good
€55
John Merle Coulter
1915 · Very good
€40
Roy Chapman Andrews, Yvette Borup Andrews
1921 · Good
€105
Asa Gray
1891 · Good
€80
Friedrich Anton Wilhelm Miquel
1850 · Very good · NL
€250