972 On the Microscopic and General Characters of |December, 
Mr. Thos. Taylor says, that ‘it is evident that the healthy 
leaves possess an antiseptic substance which prevents the growth 
of the common moulds on them.” The results of my experi- 
ments have led me to the same conclusion. An analysis of the 
S a“ 
nigh eae 
X 406 
Fic. 5—A, fruit of a fungus found just beneath the skin of the peach. pigs - 
resembles a portionrof the fruit of the Saprolegniese (x 406); B, spores form 
' the peach rawn with the camera lucida (x 406). 
leaves show that there is a much larger proportion of moisture we 
the diseased leaves than in the healthy. I analyzed several per ie 
mens of each and found a greater difference between them poset 
Mr. Taylor reports.1_ However, this is not important, as the a : 
cent. may and does vary much. The average of my 7 
was as follows: 
HEALTHY LEAVES. 
Moisture . . Sha Ukabewees® seer 
“Ash., : eo eee aged 
‘Mich, Pomological Report, 1872, p. 597. 
