[962] Loiseleur-Deslongchamps et Michel, Nouveau Duhamel, ou Traité des arbres et arbustes que l’on cultive en France, v. (1812) 189, pl. 54. fig. 2, pl. 56. fig. 9.
[963] Liebig’s Ann. der Chemie, ci. (1857) 228.
[964] This was especially the case in the winter of 1873-74.
[965] Dendrologie, part i. (1869) 94.
[966] Hooker, Flora Boreali-Americana, i. (1833) 169.
[967] Schöpf, Materia Medica Americana, Erlangæ 1787; 77.—Also Barton, Collections for Mat. Med. of U.S., Philad. 1798. 11.
[968] Pharm. Journ. v. (1864) 67.—Also Bentley and Trimen, Med. Plants, part 3; (1878).
[969] Pharm. Journ. xviii (1852) 109.
[970] Rariorum Plantarum Historia, 1601. 4.
[971] Herball (1636) 1603.