favourable for the Growth <f Seed. ()5 
lifive introduced tliPin hero ;vs tlioy furnisli us with decided 
evidence respectinj^- the growtli of seeds under highly I'avourabkr 
circumstances. 
Column No. 1 shows the depths at which the largest number 
of seeds grew. 
Column No. 2 shoAvs the deptlis at Avhich one-half of the seeds 
grew. 
Column No. 3 shows the least depth at which none grew. 
Botanical Names. 
Trivial Names. 
No. 1. 
No. 2. 
No. 3. 
Inch. 
Inch. 
Inch. 
Agrostis stolonifera 
0 
to 
1 
4 
^ to f 
1 
0 
to 
f to 1 
2| 
Alopecurus pratensis 
Meadow foxtail-grass 
0 
to 
1 to Ij 
01 
-i 
Authoxaiithuin odoratum 
Sweet-scented veriial-gi'ass 
0 
to 
1 to I4 
An nenatiieruni avenaccum 
Common oatlike-grass 
Jl 
to 
? 
1| to 1^ 
4 
Brachy podium sj lvaticum 
Wood fescue-grass 
6 
to 
4 
2 lO 4 
Dactylis gloinerata . . 
0 
to 
4 
5 to 1 
vl 
Elymus arenarius 
Sea-sand lyme-grass . . 
1 
to 1 
i 
2 to 
Festuca duriuscula .. 
Hard fescue-grass 
0 
to 
1 
4 
^ to 1 
ol 
-4 
Tall meadow-grass 
0 
to 
1 
4 
1 to 1^ 
2| 
„ elatior, gigaiitea 
,, heterophylla 
Gigantic meadow-fescue .. 
Various-leaved liard-fescue 
0 
to 
4 
I4 to li 
3 
0 
to 
4 
1 to 
ol 
0 
to 
i 
4 
4 to 1 
pratcusis 
0 
to 
1 
2 
f to 1 
01 
-5 
Glyccria a(|uatica 
Eeedy sweet water-grass .. 
1 
4 
to 
1. 
4 TO 1 
01 
-T 
Soft meadow-grass .. 
1 
4 
to 
1 
f to 1 
n 
Lolium italicum 
Italian rye-gi'ass 
0 
to 
i 
4 
1 to li 
H 
„ perenue 
Perennial r3'e-grass . . 
1 
-1 
to 
^ 
U to If 
3J 
Phleum prateuse 
Meadow cat's-tail 
0 
to 
i 
4 
f to 1 
2 
Poa nemoralis, sempervirens 
(Evergreen wood meadow- ~l 
Rough-stalked meadow-grass 
0 
to 
T 
4 
ito A 
1 
0 
to 
1 
4 
ito 1 
n 
Psamma arundinacea 
1. 
to 
1 
H to If 
4 
Achillea millefolium 
T 
to 
1 
■I 
ito S 
4 10 2 
u 
Lotus corniculatus . . 
Bird's-foot trefoil 
0 
to 
X 
i 
ll 
Medicago lupulina .. 
Black medic or nonsuch . . 
0 
to 
i 
4 
f to 1 
Ornobrychio sativa . . 
2 
4 
to 
1 
2 to 2i 
Plantago lanceolata . . 
1 
4 
to 
I 
2 
11 to U 
2i 
Poterium sanguisorba 
Common salad-bumet 
1 
2 
to 
4 
li to If 
4 
Trifolium filiforme .. 
Trefoil 
0 
to 
i 
4 
Ho * 
u 
„ liybridum 
to 
1 
4 
ito 1 
n 
,, pratense .. 
Common red clover . . 
s 
to 
X 
U to lA 
U to li 
2 
„ pratense perenne 
0 
to 
X 
2 
,, repens 
0 
to 
1 
4 
2 to J 
H 
The inference which may be fairly drawn from these results 
is, that seeds of this class should be laid as near the surface 
as possible, so that the covering of the soil shall be of the 
thinnest character. A slight covering, however, is desirable 
for the purpose of retaining moisture ; for seed placed upon the 
surface is naturally subject to the drying influence of the air, 
which, after germination has commenced, may so check the 
growth as to prove destructive to its existence. In field-culture 
VOL. XXL F 
