118 DIVISION II.—COURSE OF DEVELOPMENT OF FUNGI. 
. 
in the third edition of Strasburger’s Zell-bildung u. Zell-theilung, admits of our conceiving 
of all spore-formation as special cases of the process of cell-division without doing 
violence to the facts, and makes any further discussion of the points in controversy 
unnecessary. 
The historical data respecting the swarm-spores of the Fungi and their development 
are to be found in the following works :— 
PRINGSHEIM, Entw. d. Achlya prolifera, (N. Act. Acad. Nat. Cur. XXIII, p. 1);—Id. 
Jahrb. f. wiss. Bot. I, 290; II, 205 ; IX, 191. 
A. BRAUN, Verjüngung, p. 287, and Ueber Chytridium (Abh. d. Berlin. Acad. 1856). 
DE Bary in Bot. Ztg. 1852, p. 473 ;—Id. in Pringsheim’s Jahrb. f. wiss. Bot. II, 169. 
On the swarm-spores of Cystopus, Id. Ueber Schwärmsporenbildung b. Pilzen 
(Ber. d. naturf. Ges. Freiburg, II, 314, and in Ann. d. sc. nat. ser. 4, XIII ;—Id. 
Sur le développement de quelques Champ. paras. (Ann. d. sc. Nat. ser. 4, XX). 
SCHENCK in Verhandl. d. phys. Ges. in Wiirzburg, IX. 
B. PREVOST, Mém. sur la cause de la Carie ou Charbon des blés, Montauban, 1807. 
LEITGEB in Pringsheim’s Jahrb. VII, 357. 
CORNU, Monogr. d. Saprolegniées, Ann. d. sc. nat. sér. 5, XV. 
Lastly, the formation and abjection of acrogenously produced spores and the develop- 
ment of the spores of Saprolegnieae, Peronosporeae,and Mucor have been lately reviewed 
in the works of A. Zalewski, Ueber Sporenabschniirung und Sporenabfallen bei den Pilzen, 
Diss. and Flora, 1883, and by M. Biisgen, Die Entwickelung. d. Phycomycetenspo- 
rangien, Diss. and in Pringsheim’s Jahrb. XIII, Heft 2 (1882). 
The special works quoted in Chapter V should be referred to for details connected 
with this subject. 

