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Organization of Childcraft

The first three volumes of Childcraft introduce children to liter­ature from all ages and from around the world. In Volumes 4 through 14, children learn about living things, about machines and...

Tetanus – Tics

Tetanus (lockjaw) is an acute infectious disease that causes muscle spasms and con­vulsions. The spasms of the jaw muscles make it difficult to open the mouth, which is why this disease is called...

Swollen Glands

Swollen glands. Lymph glands (nodes) are one of the body's means of fighting infec­tion. They are located throughout the body but are especially concentrated in the neck, armpits, elbows, groin,...