138 THE BEAUTIES OF NATURE CHAP. 
Some seeds are carried by animals; either 
as food — such as most edible fruits and seeds, 
acorns, nuts, apples, strawberries, raspberries, 
blackberries, plums, grasses, etc. —or invol- 
untarily, the seeds having hooked hairs or 
processes, such as burrs, cleavers, etc. 
Some seeds are scattered by the plants 
themselves, as, for instance, those of many 
Geraniums, Violets, Balsams, Shamrocks, ete. 
Our little Herb Robert throws its seeds some 
25 feet. 
Some seeds force themselves into the 
ground, as those of certain grasses, Cranes’- 
bills (Hrodiums), ete. 
Some are buried by the parent plants, 
as those of certain clovers, vetches, violets, 
etc. 
Some attach themselves to the soil, as 
those of the Flax; or to trees, as in the case 
of the Mistletoe. 
LEAVES 
Again, as regards the leaves there can, I 
think, be no doubt that similar considerations 
