[2744] For an exhaustive account and figures see Luerssen (quoted at p. 734) p. 176.
[2745] Recherches sur les gonidies des Lichens.—Ann. des Sciences nat. Bot. xvii. (1873) 45-110; 11 plates; also xix. (1874) 314-320.—For a complete abstract of these and all the more recent investigations on this subject, see Luerssen (l.c.) 186 et seq.
[2746] The various mucilages and gums yield from 4 to 20 per cent. of ash, but lichenin yields none.
[2747] Cat. of Spanish Productions,—London Exhibition, 1851.
[2748] Dingler’s Polytechnisches Journal, 197 (1870) 177; also Chemisches Centralblatt, 1870. 607.
[2749] From the French ergot, anciently argot, a cock’s spur.
[2750] Consult Pliny’s Nat. Hist. book 18. ch. 44.
[2751] Kreuterbuch, ed. 1582. 285 (not in the edition of 1560).
[2752] Sylva Hercynia, Francof. 1588. 47.
[2753] Pinax Theatri Botanici, Basil. 1623. 23.