1 
Transpiration of Wheat Seedlings as Affected 
by Different Densities of a Complete Nutrient 
Solution in Water, Sand, and Soil Cultures. 1 ) 
Von 
George Bouyoucos, East Lansing, Mich. 
With 3 figures in the text. 
Introduction. 
In a series of studies nndertaken to ascertain the effect of 
various Chemical agents and of different densities of solution upon 
the transpiration of plants, the following principal topics were in- 
vestigated: 
1) Transpiration of wheat seedlings as affected by different 
densities of a complete nutrient solution in water, sand, and soil 
cultures. 
2) Transpiration of corn and bean seedlings as affected by 
different densities of a complete nutrient solution, in water and 
sand cultures. 
3) Transpiration of wheat seedlings as affected by different 
densities of non-nutrient salt Solutions, in water and sand cultures. 
4) Transpiration of wheat seedlings as affected by different 
quantities of various Chemical salts, in water and sand cultures. 
5) Transpiration of wheat seedlings as affected by different 
Chemical salts, and by the ions of these salts, in water and sand 
cultures. 
6) Transpiration of wheat seedlings as affected by different 
densities of an organic substance, in water cultures. 
7) Transpiration of wheat seedlings as affected by different 
densities of solution in different sized particles of sand and soil. 
In the present paper, however, only the first topic will be 
considered. 
P Contribution from the Laboratory of Soil Technology at Cornell. 
Beihefte Bot. Centralbl. Bd. XXIX. Abt. I. Heft 1. 1 
4 \ 
