She paused as if resting, and in that moment a Social wasp descended like a fury and bore her to the ground. The wasp quickly rose holding the spider in her embrace, and returning to the bush suspended herself by one hind claw. Here she held the body of the spider with two pair of legs, and turning it about, as though it were on a spit, bit off some of the head parts with her strong jaws which worked like a pair of shears. So near was I that I could see these jaws meet and sever the thorax, which fell and glanced from a leaf a few inches below with the faintest imaginable sound. The wasp then proceeded to tear open the abdomen. The builder of gossamer bridges, who overcame space and flung her nets to the breeze, was no more. I looked again at the unfinished web and in it struggled a small fly. In stretching the first strand the spider avails herself of the wind to some extent. When crossing from one point to another it is by no means necessary she should drop from a height equal to the distance to be crossed; for if the wind is strong enough she has but to descend a little way, and then, as it holds her out at right angles, she pays out the line and so continues moving in mid-air. As soon as she comes in contact with some object she at once attaches her thread. I have more than once observed a spider drop a short distance when there was no breeze to carry her, but by the movement of her body she imparted a slight motion to the line and thus set herself to gyrating until she finally swung across the intervening space. The spinners of flat webs in the grass are associated with dog-days and with foggy weather, as if they spread their tents only at such times to fold them again and steal away with the appearance of the sun. As a matter of fact these spiders work in clear weather and at different hours of the day, but the web is so fine as to be next to invisible unless covered with moisture, when it at once attracts the eye, like a writing in invisible ink which becomes manifest only under the right conditions.