A little spade-work soon turns suspicion into certainty. I unearth a sufficient number of couples to prove to me that the sexes come together underground. When the marriage is consummated, the red-belted one quits the spot and goes to die outside the burrow, after dragging from flower to flower the bit of life that remains to him. The other shuts herself up in her cell, there to await the return of the month of May. September is spent by the Halictus solely in nuptial celebrations. Whenever the sky is fine, I witness the evolutions of the males above the burrows, with their continual entrances and exits; should the sun be veiled, they take refuge down the passages. The more impatient, half-hidden in the pit, show their little black heads outside, as though peeping for the least break in the clouds that will allow them to pay a brief visit to the flowers round about. They also spend the night in the burrows. In the morning, I attend their levee; I see them put their head to the window, take a look at the weather and then go in again until the sun beats on the encampment. The same mode of life is continued throughout October, but the males become less numerous from day to day as the stormy season approaches and fewer females remain to be wooed. By the time that the first cold weather comes, in November, complete solitude reigns over the burrows. I once more have recourse to the spade. I find none but females in their cells. There is not one male left. All have vanished, all are dead, the victims of their life of pleasure and of the wind and rain. Thus ends the cycle of the year for the Cylindrical Halictus. In February, after a hard winter, when the snow had lain on the ground for a fortnight, I wanted once more to look into the matter of my Halicti. I was in bed with pneumonia and at the point of death, to all appearances. I had little or no pain, thank God, but extreme difficulty in living. With the little lucidity left to me, being able to do no other sort of observing, I observed myself dying; I watched with a certain interest the gradual falling to pieces of my poor machinery. Were it not for the terror of leaving my family, who were still young, I would gladly have departed. The after-life must have so many higher and fairer truths to teach us. My hour had not yet come. When the little lamps of thought began to emerge, all flickering, from the dusk of unconsciousness, I wished to take leave of the Hymenopteron, my fondest joy, and first of all of my neighbour, the Halictus. My son Emile took the spade and went and dug the frozen ground. Not a male was found, of course; but there were plenty of females, numbed with the cold in their cells.