A month later the orchestra has attained its full power.

A very few late singers execute their feeble solos until the middle of September.

This is the end of the concert.

As all the larvae do not issue from the ground at the same time, it is evident that the singers of September are not contemporary with those that began to sing at the solstice.

Taking the average between these two dates, we get five weeks as the probable duration of the Cigales' life on earth.
Four years of hard labour underground, and a month of feasting in the sun; such is the life of the Cigale.