Oct. 1,1925 Sulphate Content of Leaf-Tissue Fluids of Gotton 
661 
LITERATURE CITED 
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1924. QUANTITATIVE ESTIMATION OF CHLORIDES AND SULPHATES IN EX¬ 
PRESSED plant tissue fluids. Bot. Gaz. 77 1 96-102. 
(2) Harris, J. A. 
1920. PRACTICAL UNIVERSALITY OF FIELD HETEROGENEITY AS A FACTOR 
influencing plot yields. Jour. Agr. Research 19: 279-314. 
(3) -and Scofield, C. S. 
1920. PERMANENCE OF DIFFERENCES IN THE PLOTS OF AN EXPERIMENTAL 
field. Jour. Agr. Research 20: 335-356. 
(4) - Lawrence, Z. W., Hoffman, W. F., Lawrence J. V., and Valen¬ 
tine, A. T. 
1924. THE TISSUE FLUIDS OF EGYPTIAN AND UPLAND COTTONS AND THEIR 
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(5) — : - Lawrence, J. V., and Lawrence, Z. W. 
1924. THE CHLORID CONTENT OF THE LEAF TISSUE FLUIDS OF EGYPTIAN AND 
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(6) Kearney, T. H. 
1923. SEGREGATION AND CORRELATION OF CHARACTERS IN AN UPLAND— 
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71486—26f-5 
