1. The clinical appearance and histological structure of a myo-epithelial tumour of a sweat gland of the hand is described.

2. A review of previously published papers is given.

3. It is suggested that trauma may play a part in the causation of these tumours.

1. Recent published reports of neonatal osteomyelitis in long bones are reviewed.

2. Six further cases are described.

3. The source of infection is usually the skin or the umbilicus, and the common organisms are the haemolytic streptococcus and staphylococcus aureus.

4. Cases fall into two groups: in one the patient is acutely ill with septicaemia and the bone lesion is of secondary importance; in the other the general condition is well maintained even though there may be multiple bone lesions.

5. Sequestration is uncommon; but when it occurs it prevents the rapid healing that is usually observed after drainage.

6. The most important complication is suppurative arthritis, which may lead to total destruction of a joint.

7. It is probable that the lowered mortality from infantile septicaemia will be matched by a corresponding increase in the cases of acute osteomyelitis encountered in clinical practice.

1. Two cases of fracture-dislocation of the trochlea are described. One case was complicated by complete ulnar nerve palsy.

2. The injury is caused by direct force applied to the point of the elbow, or it may be associated with posterior dislocation of the joint.

3. Open reduction is recommended, the fragment being held in position by soft-tissue sutures alone.

4. Four other cases mentioned in the literature are reviewed.