The first way of doing things; the original plan or
method.

Precaution. Taking care; going slowly and with caution.

Propagate. To bring to a better condition or state. Making an
improved breed or type from plants or animals.

Projecting. Throwing or casting a shadow.

Proximity. Close to; in the neighborhood.

Phenomenon. Any new development; a startling sight; a natural
occurrence out of the ordinary.

Puncture. To cut; to open; to tear.

Pyramid. A solid with a broad base and a top with an apex.

Quartz. The hardest of the common minerals. A common rock.

Rabies. A disease the germs of which are carried by animals
when in a certain diseased condition.

Ramie. A very important fibrous plant; for making rope and
many articles of fabric.

Retort. A heated furnace for the melting of ores and metals.

Rejoinder. An answer; a reply.

Relative. In comparison with; proportionally.

Registered. Taking note of; to keep account of.

Replenished. Taking new supply; a new helping.

Restrained. To hold back; to prevent.

Reservoir. A tank or vessel to hold liquids or other matter.

Reassuring. To restore boldness or courage; to make certain.

Reconciled. To bring content and to restore confidence.

Regulation. In accordance with some law or order established.

Reagent. A substance used chemically which will have an
action on one or more substances in the sample
treated.

Relaxation. A change from the ordinary routine.

Sanitary. Healthful; in a condition to preserve health.

Sarcophagus. A stone burial place, carved out of rock.

Scientific. That which has a reason and a knowledge for each
step.

Serviceable. That which is of use; advantageous.

Seismograph. An instrument by means of which shocks in the
movement of the earth's crust may be registered.

Septic. Any substance that promotes putrefaction.

Sewage. The waste matter carried off from cities by the
drains.

Serrate. Formed