EMBRYO FLY. 21 
Lucy. Are the new skins always like 
the old one ? 
Mother, Generally they are; but in 
some species every skin varies from the 
former one ; and this circumstance has 
given rise to great mistakes, one sort 
having been sometimes taken for several 
different kinds. 
Lucy, Well, mamma, this is most 
wonderful ; I cannot think how there can 
be room in such a tiny creature for six 
skins to lie one within another! How very 
odd that does seem ! 
Mother, Yes, my love ; such things 
are indeed w^onderful : but all the works 
of our great Creator are wonderful : and 
in nothing is his power more displayed 
than in the structure and perfection of 
even the most diminutive insect. You 
feel surprised that all the skins are con- 
trived to fit one within the other; how 
will your surprise be increased when you 
hear, that within all these skins the future 
fly is contained. 
Lucy, The moth ! Oh ! mamma, how 
