Night Flowers 211 
ated, with regard to each other, that pollen can 
scarcely reach the stigma without the aid of insect 
ministrations. 
And the mother-moth seems to understand that 
unless the pistil is touched by pollen from the 
anthers there will be neither seed-vessel nor seed. 
She first bores the ovary in several places, and in 
each hole she deposits an egg. Then she collects 
load after load of pollen from the anthers, gather- 
ing it up by means of a long, coiling organ, which 
seems to have been given her for this special pur- 
pose. She thrusts most of this pollen into the 
holes with the eggs, so that it makes warm and 
dry beds for the grubs that are to be. And, 
guided by a marvellous instinct, she also places 
some of it on the stigma of the flower. So as 
the grubs develop in the ovary, the seeds which 
serve as their food develop also, and with them 
so many other seeds that the perpetuation of the 
yucca family is ensured. 
‘When the grub is full grown,” says Miller, ‘it 
bores a hole through the capsule, lowers itself to 
the ground by a thread, digs its way a few inches 
into the soil and spins a cocoon, in which it 
spends autumn, winter, and spring.” 
In its native haunts it passes into the pupa 
