tural size.

[Illustration: PLATE XXII]

EXPLANATION OF PLATE XXIII

_Fuligo rufa_ (Schw.) Pers., p. 28.

1. The plasmodium; urgent!

2. The perfected fruit; quiescent.

The figures present their objects about natural size. See also Plate X.,
Figs. 3, 3 _a_, 3 _b_, for further illustration.

From photo-prints by John T. Reeder, Mich.

[Illustration: PLATE XXIII]

* * * * * *

Transcriber's note:

Many apparent spelling errors are in fact published synonyms and
remain as printed.

The 'Corrigenda' or errata changes are entered.

Page 11.
'of enviroment.'
changed 'enviroment' to 'environment.'
Page 26
'anon winding,'
may be 'and winding,'; unchanged.
Page 29
'PLATE X, Figs. 2, 2 _a_, 2 _b_.'
added.
Page 38
'1892. _Bahamia varia_' as in original; no change.
Page 41
'In some case'
changed 'case' to 'cases'.
Page 46
'leaving his sucessors' as in original;
unusual spelling; no change.
Page 47
'24. _P. pulcherrinum_'
changed 'pulcherrinum' to 'pulcherrimum', to match the referenced
paragraph.
Page 63
'visible hyphothallus'
changed 'hyphothallus' to 'hypothallus'.
Page 65
'1873. Dydymium' as in original; no change.
Page 78
'sheet-like hyphothallus'
changed 'hyphothallus' to 'hypothallus'.
Page 79
37. Physarum leucopus _Link_.
'37.' missing in original; added.
Page 80
'P. affie Rost., Plate XIX., Fig. 4.'
changed 'affie' to 'affine'.
Page 84
'which has spores 10-12' changed to 'which has spores 10-12 mu'.
added ' mu'.
Page 98
'PLATE VIII, Figs. 8, 8 _a_, 8 _b_.'
added.
Page 108
'pendunculatum Trent.,'
changed 'pendunculatum' to 'pedunculatum'.
Page 110
'=Cienkowskia= _Rost._' changed to '=6. Cienkowskia= _Rost._'
'6.' added.
Page 114
'PLATE VII, Figs. 6, 6 _a_, 6 _b_.'
added.
Page 116
_a._ Sporangia discoid, spores reticulate 19. _D. intermedium_
_b._ Stipe, columella, peridium, orange-brown 20. _D. leoninum_
changed to
_a._ Sporangia discoid, spores reticulate 18. _D. intermedium_
_b._ Stipe, columella, peridium, orange-brown 19. _D. leoninum_
to match referenced text.
Page 130
'7. _D. niveum_'
changed '7.' to '8.'
Page 149
'cushion is interestingly aborescent'
changed 'aborescent' to 'arbores