[239] Ibid. 378.
[240] Smith, Erwin F. U. S. D. A. Div. of Bot. Bul. 9:42. 1888.
[241] Ibid. 45.
[242] Cult. & Count. Gent. 765. 1877.
[243] Ibid. 275.
[244] Mich. Hort. Soc. Rpt. 274. 1880.
[245] Gulley, A. G. Mich. Hort. Soc. Rpt. 249. 1878.
[246] Ramsdell, J. G. Mich. Hort. Soc. Rpt. 306. 1882.
[247] Lannin, Joseph Mich. Hort. Soc. Rpt. 11. 1884.
[248] Black, John J. Cult. Peach & Pear, 81. 1886.