110 
Theodor Hartig. Discovered sieve-tubes. 
DeBary. Fungi. Comparative anatomy. 
Brongniart eta Observed (1826) germination of pollen on stigma, 
and (1827) the formation of pollen er in pollen mother cells. 
Eichler. Min oholecy of the flower (1875- 
Payer. Morphology of the flower (18 os 
Van Tieghem. Physiology 
Ward (Marshall). Dendrology. 
Miller (Hermann). Pollination. 
Miller (Fritz). ie aaa 
Delpino. Pollinat 
Hildebrand. Poination, 
Bentham. System : 
Hooker (W. J.) Beiaae First director of Kew Gardens. 
Hooker (Sir J. D.) Systematic. Second director of Kew Gardens. 
Renault. Fossil botany. 
Solms-Laubach. Fossil botany. 
Radlkofer. Systematic anatomy. 
Solereder. Systematic anatomy. 
Camerarius (1665-1721). Discovered sexuality in plants. 
Gleditsch. Director Botanical Garden, Berlin. Experimental study of 
ollination and sex in plants. 
Kollreuter (1733-1806). Director Botanic and Grand Ducal Garden in 
Carlsruhe from 1768-1786. First to investigate sexuality of plants 
aeopoee First to oe importance of insects in pollination. 
rst to produce hybrid 
Seereel (1750-1816). Ge oeead dichogamy. Insects and pollination. 
K. F. Gartner (1772-1850). First intensive hybridizer of plants. 
Van Helmont (1577-1644). Made first recorded experiment in plant 
physiology. Discovered that CO, turns lime-water milky. 
sae mee 1761). “ Vegetable Statiks.” Laid foundation of plant phys- 
Du eet (1700-1781). “ Physique des Arbres.” 
Ingen-House (1730-1799). Established the difference between photosyn- 
thesis and plant respiration 
va ie haat All plants composed of the same elements, but in 
t proportions 
de Sei Ciyene4e) Developed quantitative experimentation in plant 
may ge: Nitrates and mineral matter necessary to normal nutri- 
wed necessity of chlorophyll and light to mhoosynthesi 
cs on is combined with elements of water in the pro 
that respiration is necessary to growth. Showed that the ets iil 
of the dry substance of acc is derived from the air instead of from 
the soil. Plants do not obtain nitrogen from the air 
Winogradski. Chemosynthesis. Nitrifying organisms of the soil. 
Traube. Cell growth. Osmosis. 
