It is very interesting to watch these Ants at work, and to note their activity and energy and strength. An Ant is “but a little creature,” but he is certainly able to perform a large amount of physical work. And especially is this seen in the way he builds up those little heaps of earth known as Ant-hills. I have had many of these under observation, and the rapidity with which they reappear after injury by pressure or a heavy rain-storm is very remarkable. Twenty-four hours, or even less, being often sufficient for their complete restoration. They are of varying form, but some are perfectly conical, with a circular hole at the top exactly like that of some Norfolk “kilns” used for the burning of bricks. Others are irregular, or flattened and spongy, with several holes. But it would seem that the varying shapes are largely due to the special conditions under which they are made. * 1907. I have noted that this year the brown Ants have varied in colour, or have been replaced in their more usual spots on my gravel walk by others that are nearly if not quite black. And I have also noticed that their habits are somewhat different. The little conical Ant-hills which they make are much smaller, but more numerous, than those of their predecessors, and they seem to burrow more in the adjacent grass lawn. But they keep to almost the same spots. In their daily workings and activities also there is a decided difference. They are very active in the early mornings, but often can scarcely be seen all the mid-day or afternoon, instead of racing about above ground almost the whole day, as the others did. But they may have been influenced in this by the continued cool and showery weather of the season. One very warm day about noon, in the early part of September, I witnessed some of the proceedings at one of the well-known “wedding ceremonials” of Ants. The whole body of the Ants were swarming on the grass above the nest, and racing about in evidently a great state of excitement. Amongst these were five large winged (Queen) Ants, constantly moving about, though more quietly, and in and out of the nest opening. Also in the group were some forty or more smaller winged (Male) Ants, also moving about upon the ground. None of the winged Ants were flying far about. I watched this state of commotion for some time, then left, and returned in about an hour, when the whole body of these insects had disappeared, presumably into the nest. Whether the brides and bridegrooms were about to take their wedding flight, or whether (as appears most probable) they had just returned, I am unable to state; but I saw no further commotion outside later on in the day.