The Cionus 
laboratory, what exquisite chemistry in a 
scrap of intestine! 
What use are these minute details, noted 
hour by hour? Why these puerilities? 
What matters to us the industry of a 
wretched grub, hardly known even to the pro- 
fessional experts? 
Well, these puerilities involve the most 
weighty problems that we are privileged to 
discuss. Is the world an harmonious crea- 
tion, governed by a primordial force, a causa 
causarum? Or is it a chaos of blind con- 
flicting forces, whose reciprocal thrusts pro- 
duce a chance equilibrium, for better or for 
worse? Minute entomological details ex- 
amined with some thoroughness, may serve 
us better than syllogisms, in the scientific in- 
vestigation of these trifles and others like 
them. The humble Cionus, for its part, tells 
us of a primordial force, the motive power 
of the smallest as of the greatest things. 
A day is not too long to give the bladder 
a good lining. Next day, the larva molts 
and passes into the nymphal state. Let us 
complete its story with the data gleaned in 
the fields. The cocoons are often found on 
the grass near the food-plant, on the stalks 
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