[2754] Hist. Plant. ii. (1693) 1241.
[2755] Stillé, Therapeutics and Mat. Med. ii. (1868) 609.
[2756] From 1825 to 1828 the wholesale price of ergot of rye in London was from 36s. to 50s. per lb., that is to say, from twelve to fifteen times its present value.
[2757] Pereira, Elem. of Mat. Med. ii. (1850) 1007.
[2758] Consult Häser, Lehrbuch der Geschichte der Medicin und der Volkskrankheiten, 1845. i. 256. 830, ii. 94; C. F. Heusinger, Recherches de Pathologie comparée, Cassel, i. (1853) 543-554; Mérat et De Lens, Dict. Mat. Med. iii. 131, vii. 268.
[2759] Tissot of Lausanne, Phil. Trans. lv. (1766) 106.—See also Dodart, Mém. de l’ Acad. R. des Sciences, x., années 1666-1699 (Paris, 1730) 561; Hist. de la Soc. Roy. de Méd., année 1776. 345; and Mém. de Méd. et de Phys. méd. année 1776. 260-311. 417.
[2760] Th. von Heuglin, Reise nach Abessinien etc. Jena, 1868. 180.
[2761] Wiggers and Husemann, Jahresbericht for 1870. 582.
[2762] Ann. des Sciences nat., Bot., xx. (1853) 1-56 and 4 plates.—More recent observations will be found in St. Wilson’s paper, Trans. of the Bot. Society of Edinburgh, xli. (1876) 418-434 with figures; and especially in Luerssen (quoted at p. 735) 156, et seqq.
[2763] Ergot of rye collected by myself in August, placed upon earth in a garden-pot and left in the open air unprotected through the winter, began to develop the Claviceps on the 20th March, and on another occasion on the 20th April, at which date some sowed in February also began to start, Sharp frost appears to retard the vegetation; thus, after the cold winter of 1869-70, Claviceps, even in the greenhouse, did not make its appearance before the 11th May. The earliest instance of fully developed ergots which I ever observed, occurred on the 11th of June; more frequently they are seen only in the beginning of July.—F. A. F.