438 МК. Т. A. DYMES ON THE 
It is true that I did not watch the snails break up the masses in the open ; 
but I do not think that any other visitors can have done so, because when I 
left masses exposed for the birds, and took steps to protect them from the 
molluses, they were not disturbed at all. Furthermore, as will presently 
appear, I proved by means of captives that Helix aspersa can do this work 
and is a very efficient disintegrating agent: that, however, is a very 
different thing from effecting dispersal—a point which will receive some 
little attention almost at once. 
Tables to illustrate the work of Helix aspersa. 
Taste I — Masses put down. Tage III.— Masses broken. 
№. of seeds, | Seeds 
ace - NEN | eus. 
3.7.15. No. 1...... i4 а Е —— 
| ° LEN 12 No ! TN E 
SEN 9 1 ZEN 1 
4... 11 | bees T 
D 10 | К TEN 19 
6 ue 12 | К DEREN 15 
Tus » | 13.2 12 
$7 15 | 15 n 15 
10 ...... 14 | 18 ......... 11 
И ...... 9 | ا‎ 
12 ...... 9 | 9 masses. | 107 seeds. 
133 seeds. 
2 masses, 
4.7.15. No. " Uv 15 TABLE [V.—Masses missing. 
Henn 1o mE 
16 ...... 7 _ o 
I7 ...... 11 No. 12 "MM 9 
18 ...... И 17......... 11 
19 ...... | 10 19 ......... 10 
19 masses. | 209 seeds. 3 masses. 30 seeds, 
Average ..... 
11 seeds apiece. 
TABLE IT.— Masses intact. 
| Seeds, | 
и 
TABLE V.—Masses reduced to 
single seeds, 
8 
11 ......... 9 
14 ........ 10 
16 7 
| В 
+ masses, 24 seeds. 
— 
| 
