MICHIGAN ACADEMY OF SCIENCE. 195 



^Mikesell, Thomas, "Phenological Dates and Meteorological Data 

 Recorded at Wauseon, Ohio." Monthly Weather Review, Supplement 

 No. 2, 1915. 



"Sandsten, E. P., "Conditions which Eifeet the Time of the Annual 

 Flowering of Fruit Trees." Wis. Exp. Sta. Bui. No. 137, 1906. 



®Lehenbauer, P. H., "Growth of Maize Seedlings in Relation to 

 Temperature." Phys. Researches, Vol. 1, No. 5, December, 1914. 



■^Livingston, B. E. and Grace J., "Temperature Coefficients in Plant 

 Geography and Climatology." Bot. Gaz. No. 56, pages 340-375, 1913. 



®Zon, Raphael, "Meteorological Observations in Connection with 

 Botanical Geography, Agriculture and Forestry." Page 217, Monthly 

 Weather Review, 1914. 



''Livingston, B. E., "Physiological Temperature Indices for the Study 

 of Plant Growth in Relation to Climatic Conditions." Phys. Researches, 

 No. 8, April, 1916. 



^"McDougal, D. T., "The Auxo-thermal Integration of Climatic Com- 

 plexes." Am. Jour. Bot., page 186, Vol. 1, 1914. 



^^Ehlers, John H., "The Temperature of Leaves of Pinus in Winter." 

 Am. Jour. Bot., January, 1915. 



■'^Askenasy, "Ueber die Temperatur, welche Pfanzen im Sonnelicht 

 annehmen." Bot. Zeitung, 1875. 



^^Ursprung, "Die physikalischen Eigenschaften der Laubbliitter." 

 Bibliotheca Botanica, Heft 60, 1903. 



.^^Matthaei, Miss, "On the Effect of Temperature on Carbondioxide 

 Assimilation." Phil. Trans. Series B, Vol. 197, 1904. 



^^Smith, A. M., "On tlie Internal Temperature of Leaves in Tropical 

 Insolation, with Special Reference to the Effect of their Color on the 

 Temperature." Ann. Roy. Bot. Gar., Peradeniya, Vol. 4, 1907-1910. 



^•'Darwin, Francis, "On a Self-Recording Method Applied to the Move- 

 ment of Stomata." Bot. Gaz., Vol. XXXVII, No. 1, page 81, February, 

 1904. 



