Iridium

The metal. Jr. One of the metals of the platinum group, among the heaviest of known subsubstances and almost indestructible. Introduced by Hering in 1853. The precipitate made by Genth was triturated by Boericke ; one ten thousandth part of it produced a vivid black. Twenty grains of , the 3d trituration were taken by A. J. Tafel when in a state of perfect health. It is the only proving of Iridium and not contained in Allen's Encyclopedia. All the symptoms were experienced within two hours.

Outer Head

Pain in middle of occipital bone.

Sight and Eyes

A feeling as if the eyes were being affected from below upward.

Hearing and Ears

Feeling of numbness in ears and throughout the body, lasting but a short time.

Upper Face

Pain in 1. malar bone, a kind of stinging; from this place a kind of warmth spreads over the whole face; the pain is also felt in r. malar bone like a pressure.

Feeling as of a triangle in face, the base is formed by the two malar bones, the apex in the vertex.

Inner Mouth

Increased saliva with sensation in malar bones which is more perceptible on 1. side.

Upper Limbs

A transient pain on inner side of wrists, particularly the left, also in bend of knee joint.

Lower Limbs

Pressing in anterior portion of 1. thigh in middle of upper half, followed by pressing in groin.

While walking, feeling of tension in both thighs, particularly in 1.; then a dislocated feeling in 1. hip joint,- and a dull pain tending toward 1. gluteal region.

Cramp-like contraction in r. calf and middle of sole of foot.

Rest. Position. Motion

While walking : feeling of tension in both thighs.

Locality and Direction

Right: pain in malar bone; cramp-like contraction in calf.

Left: pain in malar bone; sensation more perceptible in malar bone; transient pain in wrists, < 1.; pressing in anterior portion of thigh ; feeling of tension in thigh ; dislocated feeling in hip joint; dull pain tending towards gluteal region.

From below upward: eyes affected.

Sensations

As if the eyes were being affected from below upwards; as of a triangle in face, the base formed by the two malar bones, the apex in the vertex.

Pain: in middle of occipital bones.

Stinging pain : in 1. malar bone.

Cramp-like contraction: in r. calf and middle of sole of foot.

Pressure-like pain: in r. malar bone.

Dull pain: tending toward 1. gluteal region.

Transient pain: on inner side of wrists; in knee joints.

Pressing: in anterior portion of 1. thigh, in middle of upper half; in groin.

Dislocated feeling : in 1. hip joint.

Feeling of tension : while walking, in both thighs.

Numbness: in ears and throughout whole body.