B, Stage after closure of blastopore.

The method of this dorsal closure varies in different insects.

The Senate rules have no provision for the closure of debate, nor any limitation on the length either of a debate or of a speech.

Symptoms attendant on the hypnotic state are closure of the eyelids by the hypnotizer without subsequent attempt to open them by the hypnotized subject; the pupils, instead of being constricted, as for near vision, dilate, and there sets in a condition superficially resembling sleep. But in natural sleep the action of all parts of the nervous system is subdued, whereas in the hypnotic the reactions of the lower, and some even of the higher, parts are exalted.

It is still longer before the neural tube completes its closure in front, exhibiting a small orifice at the surface, the anterior neuropore.