[221] I am indebted to Prof. Kanthack for calling my attention
to an interesting account of Bacilli in small stones found in
gall-bladders; a manner of occurrence comparable to that of the fossil
forms in petrified tissues. Vide Naunyn (96) p. 51.
[223] Hooker, J. D. (44) p. 457. Pls. CLXVII.CLXVIII. and CLXXI. D.
[224] An American writer has recently discussed the literature
and history of Fucoides; he gives a list of 85 species. It is
very doubtful if such work as this is worth the labour. (James [93].)
[225] Wille (97) p. 136, also Murray, G. (95) p. 121.
[226] Linnarsson (69) Pl. XI. fig. 3. There are
many good specimens of this fossil in the Geological Survey Museum, Stockholm.
[234] Barrois (88). References to other records of this genus
may be found in Barrois’ paper.
[235] Zeiller (84). Phymatoderma is probably a horny
sponge (vide p. 154).
[236] Newberry (88) p. 82, Pl. XXI. There are
some large specimens of this supposed alga in the National Museum,
Washington; they are undoubtedly of the nature of rill-marks.
[246] Kidston (83) Pl. XXXII. fig. 2. Specimens of
this form may be seen in the British Museum collection.
[247]Cf. Matthew, G. F. (89). Hall called attention
in 1852 to the prevalent habit of describing ‘algae’ from the older
strata, without any evidence for a vegetable origin. (Hall [52] p. 18.)
[251] A monograph on the Diatomaceae has recently been written
by Schütt for Engler and Prantl’s systematic work. See also Murray, G.
(97) and Pfitzer (71).
[294] Lamouroux gives a figure of Acetabularia, and
includes this genus with several other algae in the animal kingdom
(Lamouroux [21] p. 19), Pl. LXIX.).
[361]Vide Walther (88) p. 499; also Jukes-Browne and
Harrison (91) passim. I am indebted to Mr G. F. Franks, who has
studied the Barbadian reefs, for the opportunity of examining sections
of West-Indian coral-rock.