IV 
II. Evidence and discussion of the occurrence of saltation within the genus Helmin- 
thosporium: PAGE 
Introductory. oe 6 US ch ©.5e ees 
Characters of Palemiee as Showa in eaneiers etal eo ae, Aaa 
Tendencies:inssaltation.- + (2 2 @ = 8 5 =) « GR «4 2 eo leo 
Stability of the saltants . . pe ES ee EE 
Stability of the saltants through the comida og i OS es 
Apparent reversions . . be be Gone ae As 
Supposititious causes of the variant sectors pike hl en cee 
Saltations from single conidia eer me eee tai a i Hal 
Frequency of saltation ah sted Gtlj est pias beh Kho a Se SPR 
Saltations occurred on various set Pe Se > Yl eS, eee 
Saltations and modifications occurring in test- onlbs eaters TO, ee ees 
Saltations in nature. . Se ge ay a he) een ae ee tel 
Notes concerning selected acetal hens Pree ee se ake. 2 SS 
(Een Ghsehesoal@:caliaisol fe bo ala 5 os 5 G 6 6 5 » U7 
Maxonomy. wo A ee Nake de a 
Conclusion -2 ea ei eet i ey re a a 
Stimmiatiyy coh yee Me ee ets RP ere eT Ree ite ct We sa 
Diterature/citedy 2-05 ee hs, ee ee) Tere een gm 
Appendix: 
Methods eee. Peete ede, a) 
List of Hin ognavinns eal fain purposes oe comparison =| 72) oan see 
Discussion of foregoing list with several brief descriptions . . . . . . 184 
Graphs: Figures A 
Plates: VII—XXXIV. 
