92 LON A. HAWKINS 



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Gies, WJ. [03]. See True and Gies [03]. 



Hasselbring, H. [06], The appressoria of anthracnoses. Bot. Gaz. 42: 135-142. 1906. 



Heald, F.D. [96], The toxic effect of dilute solutions of acids and salts upon plants. Bot. Gaz 22: 

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Hosford, H.H., and Jones, H.C. [n], Conductivity, temperature coefficients of conductivity and dis- 

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Jensen, G.H. [07], Toxic limits and stimulation effects of some salts and poisons on wheat. Bot. Gaz. 

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[12], Electrical conductivity, dissociation and temperature coefficients of conductivity, from 



zero to sixty-five degrees, of aqueous solutions of a number of salts and organic acids. 

 Carnegie Institution of Washington Publ. 170. Washington. 1912. 



Kahelenberg, L., and True, R.H. [96], On the toxic action of dissolved salts and their electrolytic dis- 

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Kronig, B., and Paul, Th. [97], Die chemischen Grundlagen der Lehre von der Giftwirkung und 

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Le Renard, A. [12], Influence du milieu sur la resistance du Penicille crustace aux substances toxiques. 

 Ann. Sci. Nat. Bot. IX. 16: 276-336. 1912. 



Livingston, B.E. [05], Chemical stimulation of a green alga. Bull. Torr. Bot. Club 32: 1-34. 1905. 



Loeb, J. [oo], On ion-proteid compounds and their role in the mechanics of life phenomena. I. The 

 poisonous character of a pure NaCl solution. Amer. Jour. Physiol. 7: 327-338. 1900. 



[02], Ueber den Einfluss der Werthigkeit, und moglicherweise der electrischen Ladung fur 



lonen auf ihre antitoxisch Wirkung. Archiv ges. Physiol. 88: 68-78. 1902. 



t6], The dynamics of living matter. New York. 1906. 



[12], The mechanistic conception of life. Chicago. 1912. 



Loew, O. [92], Ueber die physiologischen Functionen der Calcium- und Magnesium-saize im Pflanzenorgan- 



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 Loomis, N.E., and Acree, S.F. [n], A study of the hydrogen electrode, of the calomel electrode and of 



contact potential. Amer. Chem. Jour. 46: 585-620. 1911. 



Horowitz, H. [10], Ueber Adsorption und Kolloidfallung. Kolloidchem. Beih. i: 301-331. 1910. 

 Morse, H.N., and Holland, W.W. [09], The osmotic pressure of cane sugar solutions at 25. Amer 



Chem. Jour. 41 : 1-19. 1909. 

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plants. Bot. Gaz. 42: 127-134. 1906. 



[07], On tte importance of physiologically balanced solutions for plants. II. Fresh 



water and terrestrial plants. Bot. Gaz. 44: 259-272. 1907. 



[12], The permeability of protoplasm to ions and the theory of antagonism. Sci. N.S. 35: 



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U.S. Dept. Agric. Bur. Plant Ind. Bulletin 252. 1913. 



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1898. 

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1912. 

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solutions. Bull. Torr. Bot. Club 30: 390-402.1903. 

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