. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 894 Rural School Leaflet are the orb webs, the most perfect structures made by living creatures, except by the hand of man. Each species constructs its own kind of orb web, but the general plan is similar. The spider first constructs the framework of the supporting lines; the outer part of this frame- work is irregular and holds the web in place, bu
. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 894 Rural School Leaflet are the orb webs, the most perfect structures made by living creatures, except by the hand of man. Each species constructs its own kind of orb web, but the general plan is similar. The spider first constructs the framework of the supporting lines; the outer part of this frame- work is irregular and holds the web in place, but the central part is very regular, being constructed like a wheel with many lines radi- ating from the center. All of the threads of the framework are dry and will not adhere to anything that touches them, nor will they stretch. But after the wheel framework is constructed, the spider places on the radiating lines a spiral thread, which is sticky and elastic so that it will adhere to and entangle any insect touching it. Many of the orb weavers spin a zigzag ribbon across the center of their webs to make them stronger. Some species reside at the center of the web, while others have a retreat near the edge of the web. But, in either case, the resting spider has in its claws one or more lines connected with the web, and through them receives warning when an insect is entrapped and jars the net. One of the most interesting observations to be made in the field is to watch a spider construct an orb web. This may be seen easily in the morning or late in the afternoon on summer Diagram of an orb web. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York State College of Agriculture; Cornell University. Agricultural Experiment Station. [Ithaca, N. Y. ?]
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