Muscles, growth of, [50];

working of, [240].

Muscle minds, [235]-237.

Muscular sense, [167]-169, [191], [223]-225.

Nausea, [173].

Nerves, of chick, [4]-5;

growth of, [50].

Nose, and smell, [189]-190;

of ants, [203]-209;

bacteria in, [277]-278.