62 
IOWA ACADEMY OF SCIENCE 
COMPARATIVE DISTRIBUTION OF COMMON DISEASES IN 
Name of Disease 
1870- 
1877 
1878- 
1881 
1882 
1883 
i 
1884 i 1885- 
Hypocreaceae— 
- 
- 
- 
Fungi Imperfect! , etc. — 
27 Spot disease of strawberry 
+ 
+ 
28 Apple-scab 
0 
- 
29 Black-Knot of plum 
+ 
- 
- 
- 
- 
0 
0 
36 Spot disease of red currant 
S7 Spnt fIi«pnHA nf ^nnsphprry ... 
.98 Spf^t dis^as*^ nf hppf , . _ _ 
.90 Anthrqpnnsp of r.qsphprry __ . .. 
+ 
40 Anfhrnptinsp of blaokhprry 
41 Spof rlispnsp of Alfalfa . 
42 Brown-rot of stone fruits 
0 
0 
4.9 Wbpat spah 
44 \Vbpaf blight _ .. _ . 
4.T Bird’s-pyp fnngiis . _ ._ 
4fi Brown. rot of Sugar Bppt 
0 
0 
47 Spab on phprrv ... _ 
48 Scab on plum 
49 Spab on ppaph .... 
50 Yellow leaf disease of barley 
51 Oak-spot 
Uredineae— 
.52 Common grass rnst 
+ 
+ 
- 
- 
53 Covprpd rnst 
- 
.51 Crowned rnst on oats_ _. 
- 
- 
- 
5.5 Bean rnst 
