358 Proceedings of the Royal Physical Society. 
Table wlustrating the Postponement of Germination, chiefly of 
Aquatic Plants. 
Number N 
Percentage of Germinating 
Seeds in successive years. 
5 umber) Conditions 
PECIES. se of >! of wa 
Experi- ; os 
ment. | Seeds. | Experiment. == | 1. | I. |HI.|IV.| V. 
of 
ake} 
Nuphar luteum, . keyry 1 23 | Wet Mud. 0 
2 2340 Water. O } 4) 137 eo Spee 
3 200 Wet Mud. 0 
4 50 Wet Mud, 0 
after 6 weeks 
sea-water 
immersion. 
Nymphea alba, 5 1820 Water. 0) 1) 86: =), Oleoee eee 
6 100 Wet Mud. Lo} St) 1) abreSeeleee 
7 50 Wet Mud. O | ZO) -OyRO\ eee 
la ae as 8 200 | Wet Mud. | 0 | 37| 26) 20]..../..:- 
Myriophyllum spicatum, 9 30 Water. pe Wo Frege rasa ee oo 
10 25 Water. pS) (Peart rete (Greencycles 
11 105 Water. LL 982%. 5 lee hoes 
12 40 Water. 0 
! 
Limnanthemum nympheoides, | 13 50 Wet Mud. 0 
14 66 Wet Mud. 0 
15 200 Water. Qs.)  52\| S41. Sosbaee eee 
16 110 Water. Q | O91) 41.5. shee leer 
17 40 Water, 0. | -18| 40ile 2) sane 
2 after drying 
3 months. 
Ceratophyllum demersum, «| 18(a) 13 Wet Mud. O° | 2B) "54.75. errs pete 
18(B) 20 Water. O° | 10) :60)}, 10: |Sceeieaee 
19 8 Water, O (| 62: T2)-n cs) eaters eee 
after drying 
2 months. 
Sparganium ramosun, 20 117 Vater. 0 
21 70 Water. 0 
22 68 Water. 0. | AON... 2}. cecil een 
23 12 Water. 0 
Sparganium simplex, . ~ilees 6 Water. 0 
25 100 Water. O°} (Oh 0010) Sea 
26 40 Wet Mud, OF) 22s cs). 2 hee 
after 3 weeks 
immersion in 
sea-water. 
Calla palustris, 27 33 Water. 0 
28 33 Water. 0 
29 31 Water. 0 
30 20 Water, 0 
after drying 
34 months. 
Potamogeton densus, 31 30 Water. 0 
32 33 Water. 3 
33 24 Wet Mud. | 0 
Potamogeton obtusifolius, f | 
* A single seed germinated in this year. 
