The Haricot-Weevil 
mechanism of flight; then one by one they 
fly off. They mount high in the luminous 
air; they grow smaller and smaller and are 
soon lost to view. My persevering attention 
meets with not the slightest success: not one 
of the fly-aways settles on the haricots. 
After tasting the joys of liberty to the full, 
will they return this evening, to-morrow, the 
day after? No, they do not return. All 
the week, at favourable hours, I inspect the 
rows of beans, flower by flower, pod by pod; 
never a Weevil do I see, never anegg. And 
yet it is a propitious time of year, for at 
this moment the mothers imprisoned in my 
jars are laying their eggs profusely on the 
dry haricots. 
Let us try at another season. I have two 
other beds which I have had sown with the 
late haricot, the red cocot, partly for the 
use of the household, but principally for the 
sake of the Weevils. Arranged in conveni- 
ent rows, the two beds will yield their crops 
one in August, the other in September and 
later. 
I repeat with the red haricot the experi- 
ment which I made with the black. On 
several occasions, at opportune times, I 
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