The effective date for the quota cut is the first of March, she said. That means we can deliver one more full package.

You know what to do, Dr Twenty-man-jones. We will fill the package with sweeteners, Mrs Courtney. What is a sweetener, Dr Twenty-man-jones? Shasa spoke for the first time, and the engineer turned to him seriously.

When we turn up a number of truly excellent diamonds in one period of production, we reserve some of the best of them, set them aside to include in a future package which might be of inferior quality. We have a reserve of these high quality stones which we will now deliver to the CSO while we still have the opportunity. I understand, Shasa nodded. Thank you, Dr Twenty-man-Jones. Pleased to be of service, Master Shasa. Centaine stood up. We can go in to dinner now, and the white-jacketed servant opened the sliding doors through into the dining room where the long table gleamed with silver and crystal and the yellow roses stood tall in their antique celadon vases.

A mile down the railway track from where Centaine's coach stood, two men sat huddled over a smoky campfire watching the maize porridge bubbling in the billy-can and discussing the horses. The entire plan hinged on the horses. They needed at least fifteen, and they had to be strong, desert hardened animals.

The man I am thinking of is a good friend, Lothar said.

Even the best friend in the world won't lend you fifteen good horses. We can't do it with less than fifteen, and you won't buy them for a hundred pounds. Lothar sucked on the stinking clay pipe and it gurgled obscenely. He spat the yellow juice into the fire. I'd pay a hundred pounds for a decent cheroot, he murmured.

Not my hundred, you won't, Hendrick contradicted him.

Leave the horses for now, Lothar suggested. Let's go over the men we need for the relays. The men are easier than the horses. Hendrick grinned.

These days you can buy a good man for the price of a meal, and have his wife for the pudding. I have already sent messages to them to meet us at Wild Horse Pan. They both glanced up as Manfred came out of the darkness, and when Lothar saw his son's expression he stuffed the notebook into his pocket and stood up quickly.

Papa, you must come quickly, Manfred pleaded.

What is it, Manie? Sarah's mother and the little ones. They are all sick. I told them you would come, Papa. Lothar had the reputation of being able to heal humans and animals of all their ills, from gunshot wounds and measles to staggers and distemper.

Sarah's family was living under a tattered sheet of tarpaulin near the centre of the encampment. The woman lay beneath a greasy blanket with the two small children beside her. Though she was probably not older than thirty years, care and punishing labour and poor food had greyed and shrunken her into an old woman. She had lost most of her upper teeth so that her face seemed to have collapsed.

Sarah knelt beside her with a damp rag with which she was trying to wipe her flushed face. The woman rolled her head from side to side and mumbled in delirium.

Lothar knelt on the woman's other side, facing the girl.

Where is your pa, Sarah? He should be here., He went away to find work on the mines, she whispered.

When? Long ago. And then she went on loyally, But he is going to send for us, and we are going to live in a nice house How long has your ma been sick? Since last night. Sarah tried again to place the rag on the woman's forehead but she struck it away weakly.

And the babies? Lothar studied their swollen faces.

Since the morning. Lothar drew back the blanket and the stench of liquid faeces was thick and choking.

I tried to clean them, Sarah whispered defensively, but they just dirty themselves again. I don't know what to do., Lothar lifted the little girl's soiled dress. Her small pot belly was swollen with malnutrition and her skin was chalky white. An angry crimson rash was blazoned across it.

involuntarily Lothar jerked his hands away. Manfred, he demanded sharply. Have you touched them, any of them? Yes, Pa. I tried to help Sarah clean them. Go to Hendrick, Lothar ordered. Tell him we are leaving immediately. We have to get out of here. What is it, Pa? Manfred lingered.

Do as I tell you, Lothar told him angrily, and when Manfred backed away into the darkness, he returned to the girl.

Have you been boiling your drinking water? he asked, and she shook her head.

It was always the same, Lothar thought. Simple country people who had lived far from other human habitation all their lives, drinking at sweet clean springs and defecating carelessly in the open veld. They did not understand the hazards when forced to live in close proximity to others.

What is it, Oom? Sarah asked softly. What is wrong with them? Enteric fever. Lothar saw that it meant nothing to her.

Typhoid fever, he tried again.

Is it bad? she asked helplessly, and he could not meet her eyes. He looked again at the two small children. The fever had burned them out, and the diarrhoea had dehydrated them. Already it was too late. With the mother there was perhaps still a chance, but she had been weakened also.

Yes, Lothar said. It is bad. The typhoid would be spreading through the encampment like fire in the winter-dry veld.

There was already a good chance that Manfred might have been infected, and at the thought he stood up quickly and stepped away from the foul-smelling mattress.

What must I do? Sarah pleaded.

Give them plenty to drink, but make sure the water is boiled. Lothar backed away. He had seen typhoid in the concentration camps of the English during the war. The death-toll had been more horrible than that of the battlefield.

He had to get Manfred away from here.

Do you have medicine for it, Oom? Sarah followed him.

I don't want my ma to die, I don't want my baby sister if you can give me some medicine, She was struggling with her tears, bewildered and afraid, turning to him in pathetic trust.

Lothar's only duty was to his own, yet he was torn by the child's little display of courage. He wanted to tell her, There is no medicine for them. There is nothing that can be done for them. They are in God's hands now. Sarah came after him and took Lothar's hand, tugging desperately at it as she tried to lead him back to the shelter where the woman and the two small children lay dying.

Help me, Oom. Help me to make them better. Lothar's skin crawled at the girl's touch. He could imagine the loathsome infection being transferred from her warm soft skin. He had to get away.

Stay here, he told her, trying to disguise his revulsion.

Give them water to drink. I will go to fetch medicine. When will you come back? She looked up trustingly into his face, and it took all his strength to tell the lie.

I will come back as soon as I can,he promised, and gently broke her grip.

Give them water, he repeated, and turned away, Thank you, she called after him softly. God bless you, you are a kind man, Oom. Lothar could not reply. He could not even look back.

Instead he hurried through the darkened camp. This time, because he was listening for them, he picked up the other little sounds from the huts he passed: the fretful feverish cry of a child, the gasp and moan of a woman in the terrible abdominal cramps of enteric fever, the concerned murmurs of those who tended them.

From one of the tarpaper huts a gaunt dark creature emerged and clutched at his arm. He was not sure whether it was man or woman until she spoke in a cracked almost demented falsetto.

Are you a doctor? I have to find a doctor. Lothar shrugged off the clawed hand and broke into a run.

Swart Hendrick was waiting for him. He had the pack on his shoulder already and was kicking sand over the embers of the campfire. Manfred squatted on one side, beneath the thorn tree.