DEVELOPMENT OF TUBERS IN THE POTATO. 27 



LITERATURE CITED. 



(1) FoLLSTAD, Anton. 



1919. Potatoes grow after frosts. In Wis. Agr., v. 43. no. 9, p. 10, illus. 



(2) Franz, Hermann. 



1873. Studies an der Kartoffelknolle ... 57 p., 3 pi. Gottingen. Inaug. 

 Diss. Also in Jour. Landw., Jahrg. 21, Heft 3. p. 306-360, 3 pi. 1873. 



(3) Holmes, J. Garnett, and Neill, N P. 



1905. Soil survey of the Greeley area, Colorado. In U. S. Dept. Agr., Bur. 

 Soils Field Oper. 1904, p. 951-993, fig. 40. 



(4) Jones, C. H., and White, B. O. 



1901. Report of the Chemists. Composition of potatoes at various stages 

 of growth. In Vt. Agr. Exp. Sta. 13th Ann. Rpt. 1899/1900, p. 374-382. 



(5) Jones, L. R., and Orton, W. A. 



1899. Report of the Botanists. Potato diseases and their remedies. In Vt. 

 Agr. Exp. Sta. 12th Ann. Rpt. 1898/99, p. 151-156. 



(6) JuRGENS, Rudolf. 



1872. Anatomie und Physiologie der KnoUe von Solanum tuberosum im 

 Zustande der Winterruhe und der Keimung. 47 p. Berlin. Inaug. 

 Diss. 



(7) KOHLER, A. R. 



1910. Potato experiments and studies at University Farm in 1909. ]\rinn. 

 Agi-. Exp. Sta. Bui. 118, p. 65-14f, 8 fig. 



(8) Prunet, A. 



1893. Recherches physiologiques sur les tubercules de la pomme de terro. 

 In Rev. Gen. Bot., v. 5, no. 50, p. 49-64. 



(9) Ramsay, J. T., and Robertson, W. C. 



1917. The composition of the potato plant at various stages of development. 

 In Jour. Df-pt. Agr. A'ictoria. v. 15, pt. 11, p. 641-655, illus. 



(10) Vries, Hugo de. 



1878. Beitrage zur speciellen Physiologie landwirthsfhaftlicher Cultur- 

 pflanzen. V. Wachsthumsgeschichte der Kartoffelpflanze. In Landw. 

 Jahrb., Bd. 7. p. 591-682, pi. 16-17 (col.). 



(11) Werner, H. O. 



1919. Potato experiments 1917 and 1918. N. Dak. Agr. Exo. Sta. Bal. 129, 

 22p..2fig. 



(12) Wilfarth, H., Romer, II., and Wimmer, G. 



1905. On the assimilation of the elements of nutrition by plants during dif- 

 ferent periods of their growth. Translated from ... Landw. \'ers. Stat. 

 V. 63, 1905, by B. Leslie Emslic. 72 p. , 2 pi. (col.) London. 



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