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phases of 2rov/th_,v,'ith very dilute solutions and with the 

 variaVile seed usei. For the short ctilture period here 

 employed, the material contained in the seeds may have 

 played no inconsiderable part in determining the results, 

 preventing any influence by the salt contents of the very 

 weak solutions used, ^'i'ithout doubt, solutions of higher total 

 concentration vrould have shovm considerable differences in 

 grov/th with regard to salt proportions, and probably the vieak 

 solutions here used would have shown definite salt influences 

 with later phases of grov/th or with less variable seed. 



cultiires (for the statistical interpretation of the data) and 

 with both a high and a low temperature. Definite solution- 

 grov/th effects and solution-temperature-growth effects were 

 obtained, which support the suggestion mentioned above. Since 

 the culture periods for these later experiments were much longer 

 than those for the tests of this study, thus including later 

 growth phases, the later results are to be reported in another 

 paper. The present report deals only with the tests described 

 in the text. For the preliminary paper, see: Gericke, V/.P. 

 Influences of temperature on the relations betv^een nutrient salt 

 proportions and the early growth of v/heat. Amer. Jour. Eot. 

 8:59-62. 1921. 



