228 THE FAIRY-LAND OF SCIENCE. 
are shaken. Lastly, if you look at the veins of the 
flower, you will find that they all point towards the 
spur where the honey is to be found, so that when 
the sweet smell of the flower has brought the bee, 
she cannot fail to go in at the right place. 
Two more flowers still I want us to examine 
together, and then I hope you will care to look at 
every flower you meet, to try and see what insects 
visit it, and how its pollen-dust is carried. These two 
flowers are the common Bird's-foot trefoil (Lotus 
ccrniculatus), and the Early Orchis (Orchis mascu/a), 
which you may find in almost any moist meadow in 
the spring and early summer. 
The Bird's-foot trefoil, Fig. 62, you will find almost 
anywhere all through the summer, and you will knovr 
it from other flowers very like it by its leaf, which is 
not a true trefoil, for behind the three usual leaflets 
of the clover and the shamrock leaf, it has two small 
leaflets near the stalk. The flower, you will notice, 
is shaped very like the flower of a pea, and indeed it 
belongs to the same family, called the Papilionacece or 
butterfly family, because the flowers look something 
like an insect flying. 
In all these flowers the top petal (sta, Fig. 62) 
stands up like a flag to catch the eye of the insect, 
and for this reason botanists call it the "standard." 
Below it are two side-petals w called the " wings," and 
if you pick these off you will find that the remaining 
two petals k are joined together at the tip in a shape 
like the keel of a boat (2, Fig. 62). For this reason 
they are called the " keel." Notice as we pass that 
these two last petals have in them a curious little 
