M. C. COOKE ON BUNT SPOEES. 173 



The ripe forms are distinguished from the xmripe ones by having 

 a cuticula developed, which makes them much more resistant. 



I am not intending to enter upon an examination of this theory, 

 or Professor Hallier's propositions. This is not the time or place 

 for either. All I desire to do is to show the connection between 

 Bunt Spores and the cholera controversy, as an apology for bring- 

 ing the subject before the Club. I would commend Professor De 

 Bary's observations to the consideration of all who favour Hallier's 

 views, and, as a humble student, I would protest against assump- 

 tions being accepted as facts, and deny that Dr. Hallier has proved 

 by his experiments that bunt spores have any connection whatever 

 with mucors or mucedines, and consequently, as he admits, that 

 his whole theory is based on the supposed fact that " moulds are 

 mere unripe forms of Ustilagines," therefore his theory is without 

 even a plausible foundation. 



In order that this brief commimication may be more complete, I 

 have added as an appendix the synonyms under which bunt, or 

 Tilletia caries has been known to botanists, and also a list of such 

 books, treatises, or papers on Bunt as I could remember, which 

 might be of service to any one desirous of continuing the subject. 



SYNONYMS. 



Tilletia caries — Tulasne Ann. des Sc. Nat., 1847. Vol. vii,, pp. 113, pi. 6, 



fig. 1—16. 

 Uredo caries. — D. C. Flor. Franc. Vol. vi., p. 78. 



Tessier mal des grains, p. 217. 

 Uredo faetida—F. Bauer in Ann. Sc. Nat., 1824. Vol. ii., p. 167, pi. 7, 



fig. 17-20. 

 Uredo segetum — Pers. syn., p. 225. 

 Uredo deciplens — Str. Ann. der Wett., 1811. 

 Uredo oblongata — Ditmar in Sched. 

 Uredo sitophila — Ditmar. Deutsch., Flora. 

 Uredo sphcerococca—'R.&bh.. Deutsch., H. , No. 17. 

 CcBoma segetum — Nees. Syst., pp. 15, pi. 1, fig. 17. 

 Coeoma sitopMhim — Link. Spec. Vol. ii., pp. 2, 

 Ery&ihe fcetida — Wallroth, Flor., Germ. Vol. ii., pp. 213. 

 Erysihe folliculata — Wallr, in Verhandl. nat. Frde, i. p. 19. 

 Erysibe sphcerococca — Wallr. Flor. Germ. Vol. ii., pp. 213. 

 Ustilago caries — Dur. and Mont., Fl. Alger, i, pp. 302. 

 Ustilago tritici—Bnsb. Fl. Hal. p. 342. 

 Ustilago frumenti— Flan, Disput., 1709. 



