EXPERIMENT STATION BULLETINS. 589 



8. REFERENCE LIST. 



1. Bayliss, W. M. — Causes of the Rise in Electrical Conductivity under 



the Action of Trypsin. Jour. Physiol. 36 :221-252. 1907. 



2. Bouyoucos, G. — Transpiration of Wheat Seedlings as Affected by 



Different Densities of a Complete Nutrient Solution in Water, 

 Sand, and Soil Cultures. Beih. z. Bot. Centralblatt. 29:1-20. 

 1912. 



3. Bugarzky, Dr. St., and Tangle, Dr. F. — Eine Methode zur Besti- 



mmung des relativen Volums des Blutkorperchen und des plas- 

 mas. Centralblatt f. Physiol. 11:297. 1897. 



4. Curtis, H. A. — Resistance Coils for Alternating Current Work. Bui. 



No. 3, 8, Reprint 177, Bureau Standards. 



4a. Davis, R. O. E. and Bryan, H. — The Electrical Bridge for the De- 

 termination of Soluble Salts in Soils. U. S. Dept. Agr. Div 

 Soils. Bull. 61. 1910. 



5. Findlay, A. — Practical Physical Chemistry. London, 1910. 



6. Dixon, H. H. and Atkins, W. R. G. — Osmotic Pressures in Plants. 



II Cryoscopic and Conductivity Measurements on Some Vege- 

 table Saps. Roy. Dublin Soc. Sci. Proc. N. S. 13 :434-440. 1913. 



7. Osmotic Pressures in Plants. Ill The Osmotic Pressure 



and Electrical Conductivity of Yeast, Beer, and Wort. Ibid. 

 14:9-12. 1913. 



8. Hall, R. A. and Bell, J. M. — Physical Properties of Aqueous Solu- 



tions Containing Ammonia and Citric Acid. Jour. Amer. Chem. 

 Soc. 33 :711-718. 1911. 



9. Harris, J. E.— Soil Acidity. Tech. Bull. No. 19, Mich. Agr'l College 



Exp. Sta. 1914. 



10. Hibbard, R. P. — Improved Methods for the Quantitative Determina- 



tion of Dilute Solutions of Electrolytes. Preliminary Contribu- 

 tion. 15th. Report Mich. Acad. Sci. 1913. 



11. Hober, R. — Eine Methode die Elektrische Leitfahigkeit im Inneru 



von Zellen zu messen. Pfliigers Arch. f. d. gesammte Physiol. 

 133:237.253. 1910. 



12. Johnson, H. V. — The Absorption of Ions by Living and Dead Roots. 



Amer. Jour. Bot. Vol. 2, No. 5, pp. 250-254. 1915. 



13. Jones, H. C— The Elements of Physical Chemistry. New York, 1914. 



14. Kohlrausch, F. and Holborn, L, — Das Leitvermogen der Elektrolyte. 



Leipzig. 1898. 



15. Kiister, F. W. and Griiters, Max. — Uber die Festlegung des Neutral- 



isationpunktes durch Leitfahigkeitsmessung. Z. anorg. Chem. 

 35:454. 1903. 



16. McClendon, J. F. — The Increased Permeability of Striated Muscle 



to ions during Contraction. Amer. Jour. Physiol. No. 27, pp. 302- 

 305, 1911-12. 



