92 NATURE’S CRAFTSMEN 
the head is an exceptionally long tuft of black 
hairs, and long white hairs stick over his head 
like a horse’s fore-top. 
“ Butterflies and moths do considerable good 
distributing pollen, and thus help to form seeds. 
But their babies are all such gluttons that they 
do no end of harm in destroying the foliage of 
fruit and shade trees, besides ruining vegetables 
and grain. Caterpillars are one insect that we 
should set our heels on whenever we come near 
them, Uncle John says. But, I beg you, fetch 
me the first one of every kind you find! ” 
“ You’ll have to take care not to let your speci¬ 
mens escape,” warned Alice. “ Remember the 
gypsy moths which got away from that Massa¬ 
chusetts professor, and have since cost the state 
thousands of dollars in fighting them, to say noth¬ 
ing of the loss caused by their depredations.” 
“ Say,” queried Max, abruptly, “ do you know 
how to distinguish butterflies from moths? ” 
“ Yes,” Tommy returned, “ there are three 
general rules, but you’ve got to look out for ex¬ 
ceptions. First: Butterflies fly by day, and 
moths usually only at night. The humming-bird 
or hawk moth is an exception. You have all seen 
it around the trumpet flowers just about dusk, 
and on cloudy days. Indeed, all the character¬ 
istics of this moth are an exception from start to 
finish. In babyhood it is the big ugly naked 
