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Rh ====VIII. HOW THE WORM IN ARMOR COUNTS BY TWOS AND THREES====

Like ourselves, the crawfish is divided into three main parts, but differently.

The front third of him carries his brain, his arms and legs, his eyes and feelers. The second third is his abdomen. The third part is his tail.

Look at this picture of the inside of a crawfish. Notice where his stomach, and that long earthworm intestine, are. Now, imagine where they would be and what they would look like, if the brain of the crawfish should grow and grow, until it was as large, in proportion to the rest of his body, as your brain is.

Wouldn't the stomach be crowded into the abdomen, to make room for the brain? And wouldn't that long, earthworm intestine be doubled and folded, back and forth, just as you see the intestines of human beings, in the picture in your big brother's physiology?

Section showing inside of crawfish: a, intestine; s, stomach; c, brain.

Even in the spider, which, on the outside, is so much like the lobster, the intestine instead of being one long tube, begins to be folded, because the growth of the brain crowds it into a smaller space. The spider is much "smarter" than the lobster. She (for it is the lady spider that is so "smart") has to be much cleverer than the lobster, to catch food for herself and her little ones. She must catch flying insects with a web that she must make for herself. She must do this, not only for herself but for her babies. The lobster and crawfish lay their eggs and then go away and leave them. If they had to support their families they would have to learn to be