1921] 
WEBB—GERMINATION OF SPORES OF CERTAIN FUNGI 201 
^o, 
2 
ES 
Wat, PQ, 
^ i 
9 NS 
Y Wa, HPO, 
40 
M p Na,PO, 
o 20 4o 60 80 /00 | /20 140  /60 
Cc. Nfs NaOH per 100 cc. Mj, APO, 
o 
/ 
/ 
e 
8 
: v ANO 
x Y 
Q'é 
be ae 
/o P He | OP ko NR 
eo £6 e 3 4- o 4 8 e 46 20 
Fig. 1. Titration curves of certain liquid media: (1) orthophosphoric acid 
(after Clark and Lubs); (2) sugar beet decoction; (3) 2 per cent bacto-peptone 
solution; (4) Czapek's full nutrient solution (2, 3, and 4 after Karrer and Webb): 
(b) *water HCl or KOH." 
