LITERATURE CITED.

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(1) Beck, Gunther.

1878. Vergleichende Anatomie der Samen von Vicia und Ervum. In Sitzber. K. Akad. Wiss. [Vienna], Math. Naturw. Kl., Bd. 77, Abt. 1, p. 545-579, 2 pl.

(2) Bergtheil, C, and Day, D. L.

1907. On the cause of "hardness" in the seeds of Indigofera arrecta. In Ann. Bot., v. 21, no. 81, p. 57-60, pl. 7.

(3) Crocker, William.

1906. Role of seed coats in delayed germination. In Bot. Gaz., v. 42, no. 4, p. 265-291, 4 fig. Literature cited, p. 290-291.

(4) Darwin, Charles.

1885. The effects of cross and self fertilisation in the vegetable kingdom. 482 p. New York.

(5) Ewart, Alfred J.

1908. On the longevity of seeds. In Proc. Roy. Soc. Victoria, v. 21, pt. 1, p. 1-203. Literature, p. 3-4.

(6) Gola, Guiseppe.

1905. Ricerche sulla biologia e sulla fisiologia dei semi a tegumento impermeabile. In Mem. R. Accad. Sci. Torino, s. 2, t. 55, p. 237-270, 1 pl.

(7) Haberlandt, G.

1877. Ueber die Entwickelungsgeschichte und den Bau der Samenschale bei der Gattung Phaseolus. In Sitzber. K. Akad. Wiss. [Vienna], Math. Naturw. Kl., Bd. 75, Abt. 1, p. 33-47, 2 pl.

Hanstein, [Johannes].

(8) 1863. ErlÄuterung des Nardoo genannten Nahrungsmittels der Urbewohner Australiens, einer Marsilea-Frucht, nebst Bemerkungen zur Entwicklung dieser Gattung. In Monatsber. K. Preuss. Akad. Wiss. Berlin, 1862, p. 103-119, 1 pl.

(9) 1866. Pilulariae globuliferae generatio cum Marsilia comparata. 16 p. Bonnae. Dissertation.

Harrington, George T.

(10) 1915. Hard clover seed and its treatment in hulling. U. S. Dept. Agr., Farmers' Bul. 676, 8 p.

(11) 1916. Agricultural value of impermeable seeds. In Jour. Agr. Research, v. 6, no. 20, p. 761-796, 6 fig., pl. 106. Literature cited, p. 796.

(12) Harz, C. D.

1885. Landwirtschaftliche Samenkunde. 1362 p., 201 fig. Berlin.

(13) Hiltner, L.

1902. Die KeimungsverhÄltnisse der Leguminosensamen und ihre Beeinflussung durch Organismenwirkung. In Arb. K. Gesundheitsamte, Biol. Abt., Bd. 3, Heft 1, p. 1-102, 4 fig.

(14) Hughes, H. D.

1915. Making legumes grow. In Farm and Fireside, v. 38, no. 19, p. 7, illus.

(15) Huss, Mathias.

1890. Über QuellungsunfÄhigkeit von Leguminosensamen und Mittel zu deren Abhilfe. 73 p. Halle. Dissertation.

(16) Junowicz, R.

1878. Die Lichtlinie in den Prismenzellen der Samenschalen. In Sitzber. K. Akad. Wiss. [Vienna], Math. Naturw. Kl., Bd. 76, Abt. 1, p. 335-352, 2 pl.

(17) Kerner von Marilaun, Anton.

1891. Pflanzenleben. 2 Bd. Leipzig.

(18) Kirchner, O.

1905. Über die Wirkung der SelbstbestÄubung bei den Papilionaceen. In Naturw. Ztschr. Land-u. Forstw., Jahrg. 3, Heft 1, p. 1-16; Heft 2, p. 49-64; Heft 3, p. 97-111. Literatur-verzeichnis, p. 110-111.

(19) Knuth, Paul.

1906-8. Handbook of flower pollination, based on Hermann MÜller's work upon "The fertilisation of flowers by insects," transl. by J. R. Ainsworth Davis. 3 v., illus. Oxford. Bibliography, v. 1, p. 212-380.

(20) Lohde, Georg.

1874. Ueber die Entwicklungsgeschichte und den Bau einiger Samenschalen. 42 p., 1 pl. Naumburg. Dissertation.

(21) Love, Harry H., and Leighty, Clyde E.

1912. Germination of seed as affected by sulphuric acid treatment. N. Y. Cornell Agr. Exp. Sta. Bul. 312, p. 293-336, fig. 78-85.

(22) Lutts, F. M.

1917. Sweet clover, advantages of the crop for soil improvement. In Ohio Agr. Exp. Sta. Mo. Bul., v. 2, no. 2, p. 45-47, illus.

(23) Malpighi, Marcello.

1687. Opera omnia, seu thesaurus locupletissimus botanico-medico-anatomicus ... New ed. 2 v., pl. Lugduni Batavorum.

(24) MarliÈre, H.

1897. Sur la graine et spÉcialement sur l'endosperme du Ceratonia siliqua. In Cellule, t. 13, fasc. 1, p. 5-60, 2 pl.

(25) Martin, J. N.

1915. Relation of moisture to seed production in alfalfa. Iowa Agr. Exp. Sta. Research Bul. 23, p. 301-324, 2 fig.

(26) Mettenius, Georg.

1846. Beitraege zur Kenntniss der Rhizocarpeen. 65 p., 3 pl. Frankfurt am Main.

(27) Die Hohenheimer Samenritzmachine.

1894. In Braunschweig. Landw. Ztg., Jahrg. 62, Nr. 19, p. 86. illus.

(28) MÜller, Hermann.

1883. The fertilisation of flowers, transl. by D'Arcy W. Thompson. 669 p., 186 fig. London. Bibliography, p. 599-630.

(29) Nobbe, Friedrich.

1876. Handbuch der Samenkunde. 631 p., 339 fig., 1 pl. Berlin.

(30) ————, and Haenlein, H.

1877. Ueber die Resistenz von Samen gegen die Äusseren Factoren der Keimung. In Landw. Versuchs Sta., v. 20, p. 71-96, 13 fig.

Pammel, L. H.

(31) 1899. Anatomical characters of the seeds of Leguminosae, chiefly genera of Gray's Manual. In Trans. Acad. Sci. St. Louis, v. 9, p. 91-275, pl. 7-35. Bibliography, p. 224-257.

(32) 1886. On the structure of the testa of several leguminous seeds. In Bul. Torrey Bot. Club, v. 13, no. 2, p. 17-24, pl. 52-53.

(33) Rees, Bertha.

1911. Longevity of seeds and structure and nature of seed coat. In Proc. Roy. Soc. Victoria, n. s., V. 23, pt. 2, p. 293-414, pl. 79-81.

(34) Russow, Edmund.

1872. Vergleichende Untersuchungen betreffend die Histiologie (Histiographie und Histiogenie) der vegetativen und sporenbildenden Organe und die Entwickelung der Sporen der LeitbÜndel-Kryptogamen, mit BerÜcksichtigung der Histiologie der Phanerogamen, ausgehend von der Betrachtung der Marsiliaceen. In MÉm. Acad. Sci. St. Petersb., s. 7, t. 19, no. 1, 207 p., 11 pl.

(35) Schleiden, M. J., and Vogel, J. R. Th.

1842. Über das Albumen, inbesondere der Leguminosen. In Nova Acta. Acad. Caes. Leop. Carol. Nat. Cur., v. 19, pt. [2], p. 51-96, pl. 40-45. Reprinted.

(36) Sempolowski, Anton.

1874. Beitraege zur Kenntniss des Baues der Samenschale. 57 p., 3 pl. Leipzig. Dissertation.

(37) Tietz, A. O. Q.

1876. Über die Keimung einiger Coniferen und LaubhÖlzer bei verschiedenen aber constanten Temperaturen. 44 p., 8 pl. Reudnitz-Leipzig. Dissertation.

(38) Tunmann, O.

1913. Pflanzenmikrochemie. 631 p., 137 fig. Berlin.

(39) Verschaffelt, E.

1912. Le traitement chimique des graines À imbibition tardive. In Rec. Trav. Bot. NÉerl., v. 9, livr. 4, p. 401-435.

(40) Westgate, J. M., and Coe, H. S.

1915. Red clover seed production: Pollination studies. U. S. Dept. Agr. Bul. 289, 31 p., 7 fig. Literature cited, p. 29-31.

(41) Wettstein, Richard von.

1888. Beobachtungen Über den Bau and die Keimung des Samens von Nelumbo nucifera GÄrtn. In Verhandl. K. K. Zool.-Bot. Gesell. Wien, Bd. 38, p. 41-48, pl. 1.

(42) White, Jean.

1908. The occurrence of an impermeable cuticle on the exterior of certain seeds. In Proc. Roy. Soc. Victoria, v. 21, n. s. pt. 1, p. 203-210, 2 pl.

(43) Wigand, Albert, and Dennert, E.

1888. Nelumbium speciosum W. Eine monographische Studie. 68 p., 6 pl. Cassel. (Bibliotheca Botanica, Heft 11.)

(44) Young, W. J.

1906. The embryology of Melilotus alba. In Proc. Ind. Acad. Sci. 1905, p. 133-141, 50 fig. Bibliography, p. 136.


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Minor typos may have been corrected. Illustrations were moved to prevent splitting of paragraphs. Content produced from files generously provided by the USDA through The Internet Archive and all resultant files are placed in the Public Domain.





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