A, Key-stone of an arch; B, Arch completed.
Now the moth goes on this principle. Its eggs are shaped like the bowl of a wine-glass, and the smaller end is put next to the branch. They are all glued together, too, with a kind of gum, which will not dissolve or melt in water; so that the rain cannot injure them. Here is a picture of these eggs.
Eggs of the Lackey-moth, wound spirally round a twig of hawthorn; natural size, and magnified.
"There is another insect, boys, which has something like tweezers; though I think they resemble pincers most."
"What is it, Uncle Philip?"
"The boys call it father long-legs, and I dare say you have often seen it. It is the crane-fly, and its pincers are used for putting its egg in the hole it has made for it."