But it is in the actual weaving of the nets that the interest of the onlooker will be chiefly centred. The maker of the vertical, or cartwheel, pattern of web begins operations in various ways, according to the conditions imposed upon her by the weather and the spot she has selected. Webs made in calm seasons, or when only light airs are stirring, will have few mainstays, and these may be of considerable length; but in windy times the spider will stretch her snare on only short hawsers, using as many as may be necessary to make assurance doubly sure. But in either case she will commence the work in much the same way. First she goes to the highest point on the windward side of her gap, and turning her head to the current, begins to pay out a line behind her. As this floats out, she continually tries it with her leg until she knows that the end of the line has caught in the opposite twigs. Then she runs to the middle of this horizontal line, dragging after her another thread which she has previously attached to her original starting-point. From the centre of the first line she lowers herself vertically, always dragging the second line in her rear, until she reaches a twig below. Here she draws her second line tight and fastens it, after which she climbs to the horizontal line and repeats the manœuvre, only this time from its leeward end. Thus the triangle of mainstays—the first essential in all spider-web making—is complete. The weaving of the net within this triangular frame is the next work undertaken. The spider, when she first dropped from the centre of her uppermost thread, made a vertical line in descending. Some point on this line marks the centre of the future cartwheel pattern of web, and this central point the spider now finds unerringly, and begins to put in one by one the radiating spokes of the wheel. When all these spokes are in place, she returns to the centre, and revolving her body quickly, she forms upon it a close spiral of four or five turns. This is to be her seat and watch-tower, whence she will keep the whole web under observation. Having done this, she now—if the morning is at all breezy—carries temporary stay-lines from spoke to spoke all round the web, these isolated circles of thread occurring at intervals of an inch or so between centre and circumference. But on still mornings this part of her work is omitted as unnecessary, and she proceeds at once to the main spinning of the net.