I52 PRACTICAL NOTES ON GRASSES AND GRASS GROWING, 
for a few days in a wet state, you are sure to see this grass. It 
will attract your attention by the white shoots, like dog’s teeth, 
which spring out from every joint. If you carry some of it in 
a wet state and drop it on a moist place, it will take root 
where it falls. There are few bogs where it does not prevail ; 
it is neither coarse nor large, but runs very rapidly, forming 
large masses of vegetation. 
Should the land on which it grows become flooded and 
remain under water so long that the other grasses are 
destroyed, dog’s tooth couch will survive, provided it has been 
able to extend a little of its foliage to the surface of the water, 
when the white teeth, before mentioned, will be seen 
protuding from every joint, ready to take hold of the soil on 
again being brought in contact with it. If exposed to drought 
it dies, as it cannot exist without water. By cultivation we 
believe it would be possible to grow hay with this grass on 
land where nothing except rush or watcr grass could exist. 
MarramM Mart Grass (AMMOPHILA ARUNDIANACEA, Hoo.), 
SanD oR SEA Lyme Grass (ELYMUS ARENARIUS, LINN.), 
AND Esparto GRASS. 
The former of these grasses, which are all of one family, 
grow on the sand-banks and dunes surrounding the whole of 
our Eastern coast, where it holds the sand-hills together, 
which is of great value; whilst the latter is found serving the 
same mission on the northern coast of Africa, where it grows 
to far greater lengths than our home grass, and is largely used 
in the manufacture of paper. The general practical utility of 
marram grass is the manner in which it forms a natural barrier 
on the low-line sandy shores, where it collects the driftings and 
round its leaves, and by shooting long roots from its upper joints 
into the newly-formed sand-drifts around it, holds it secure, and 
prever.ts it from being blown away again. So great was its, 
