492 
AMERICAN JOURNAL OF BOTANY 
[Vol. 8, 
Table 15 
Same as shown in table 14, except that no NaaCOs was added. Solutions slightly 
alkaline from the powdered glass. Thymol added to each tube. 
Kinds of Pollen 
Test 
24 Hrs. 
Appearance of Solutions 
Unheated 
Autoclaved 
2. Corn 
3. Daisy 
4. Dandelion 
5. Dock 
6. Elm 
7. Goldenrod 
8. Lily, Easter 
9. Lilv, tiger 
10. Pine, Austrian 
11. Pine, white 
12. Ragweed 
13. Rye 
14. Timothy 
15. Magnolia 
16. Maple, Norway 
+ 
+ + 
? 
+ + 
? 
'+ 
+ 
+ 
+ 
+ 
+ + 
? 
Einpr<^ <5llcrVi1"l\/ HiQintpcrraf p>rl T ininri 
pink 
Fibers completely disintegrated. 
Liquid pink 
Fibrin darker, liquid milky 
No change 
Fibers completely disintegrated. 
Liquid pink 
Slight turbidity 
Fibrin shrunken. Liquid dark brown 
Disintegration, turbid, pink 
Complete disintegration. Liquid red 
No change 
Liquid turbid pinkish 
r* Vi n crrf=> 
Tests for Pepsin 
Table 16 
Same as shown in table 14, except that 2 cc. of 0.2 percent HCl was added instead of 
NaaCOs. 
Kind of Pollen 
Test 
24 Hrs. 
Appearance of Solutions 
Unheated 
Autoclaved 
1. Apple 
2. Corn 
3. Daisy. 
4. Dandelion 
5. Dock 
6. Elm 
7. Goldenrod 
8. Lily, Easter 
9. Lily, tiger 
10. Pine, Austrian 
11. Pine, white 
12. Ragweed 
13- Rye 
15. Magnolia 
16. Maple, Norway 
1 + 1 1 1 1 1 1 1 1 1 1 ++ 1 1 
No change 
Disintegration. Liquid pink 
No change 
;; 
Disintegration. Liquid pink 
No change 
No change 
< 1 < < 
