If the eyes of both boys had not been so well closed they would have rolled them in unison.

'They be idjits, Uncle Ikey. You can't try no reasoning on them, they not like us decent folks,' Tommo said.

'Don't you speak like that, Tommo Solomon!' Mary remonstrated. 'They be poor brats what's had no chance in life. They does the best they can to stay alive! They be just as decent as us given half a chance!'

'Talk to them, my dears, use your wits,' Ikey said. 'Wits be much more powerful than fists.' He rose from the table and stretched his arms above his shoulders. 'I'll be off, then. No lessons today, your Uncle Ikey's had a long, hard night.'

Later that morning the two boys were sitting on Mary's magic rock on the slopes of the mountain when Hawk turned to Tommo. 'What's you think Ikey be on about this morning?' he asked.

Tommo shrugged. 'It be Ikey stuff we be supposed to understand but can't.'

'I got an idea,' Hawk said.

Two days later the two boys found themselves accosted by five street urchins. They'd just returned from their lobster traps and their sack was bulging and bumping with six live lobsters they were hoping to sell to Mrs McKinney's fish shop for threepence.

Hawk looked at Tommo and the smaller boy nodded.

'Wotcha got?' the biggest of the urchins demanded.

Tommo and Hawk remained silent, and the snot-nose who had asked the original question made a grab for the bag in Hawk's hand.

'Careful,' Tommo shouted. 'They be magic lobsters what can curse you!'

The boy drew back confused. 'Wotcha mean?'

Hawk opened the bag, brought out a plump lobster and held it up above his head. The creature's claws and feelers waved wildly in the air.

'They can read your mind, them lobsters!'

The boys standing around jeered. 'That be fuckin' stoopid!' the first boy answered. 'Lobsters what can read me mind!'

Hawk pushed the live lobster into the face of the boy, who reeled back.

'Yeah, bullshit!' another of the urchins shouted. 'Ain't no lobsters what can do that!'

'Not your ordinary lobsters, that I admits, but these be special magic ones,' Tommo said quickly. 'It be the secret curse o' the people from Africa!'

'Who, him? The nigger?' the boy said, pointing to Hawk.

Hawk grinned. 'Black magic!' he said.

'Wanna see?' Tommo asked.

The urchins had now forgotten their original intention to rob Tommo and Hawk of the bag. 'Yeah!' they chorused.

'You brave enough to take the chance to be cursed by the great African lobster what swum all the way to visit us from the Cape o' Good Hope in Africa?' Tommo asked the eldest of the boys.

The urchin hesitated but then, seeing the others looking at him, said, 'It be stoopid! That be a fuckin' lobster like any uvver what's in the river.'

'G'warn, show us the magic!' the urchins challenged Tommo.

'Don't be cheeky!' Tommo said to the bunch of skinny boys standing around him. 'Or we'll curse the lot of you, not only him.' He scowled at the boy who had first accosted them and beckoned to the gang in a low voice. 'Come here where that African lobster creature can't hear what you is saying! Come right away all of you to that tree.' He pointed to a swamp oak about fifty feet away.

The urchins and their leader followed Tommo and stood beside the tree. 'Now I wants you each to whisper your name in me ear, one at a time, and then we'll ask the magic lobster to tell me brother what knows lobster language to tell us what your name be!' Tommo pointed to their original attacker. 'You what be double cursed already for saying it be a lobster what come from the river, you go first. Whisper your name in me ear with your back to the magic African lobster me brother's holding.'

Tommo knew the boy was known as Boxey, because his head was almost square. 'George,' Boxey whispered slyly into Tommo's ear, though loud enough for those gathered around to hear him. There was a giggle from the others at their leader's foxy trick.

Tommo stood facing Hawk fifty feet away and signalled him using the silent language. Hawk held the lobster up to his ear and appeared to listen. Then he shook his head and then the crustacean, and listened once more. Suddenly a big smile appeared on his face. 'The magic African lobster says the name given be George, but Boxey be the name what's real!' he shouted back at them.

The mouths of the urchins standing around Tommo fell open, and Boxey became very red in the face.

'You be careful, mate!' Tommo growled. 'Or you could be in real big trouble!'

Hawk suddenly held the lobster back to his ear. 'The magic African lobster says if any boy gives him a wrong name again they be double cursed to drown at sea!' he shouted.

There was a further gasp of astonishment from the boys.

'You!' Tommo said, pointing to a skinny urchin who was dressed in rags with great holes showing through, 'Come and whisper your name.' The boy, even smaller than Tommo, looked up at him terrified. 'I dunno what's me real name, they calls me Minnow.' His eyes pleaded with Tommo. 'I don't wanna be cursed, please!'

'Yeah, well I'll do me best,' Tommo said. 'But I can't make no promise. Turn your back to the magic lobster so he can't see your lips,' he commanded sternly. The urchin, shaking all over, did as he was told.

Moments later Hawk called back, 'Minnow!'

Tommo turned to the leader of the gang. 'Boxey, you be real lucky this time! But be warned!' He turned to the other urchins. 'Anyone want to take a chance o' being cursed?' There were no further volunteers and so Tommo called over to Hawk, 'Put the lobster in the bag and come over!'

As Hawk approached the gang they started to back away from him. 'Don't run!' Tommo said. 'We got to lift the curse first!'

'What's you mean?' Boxey asked suspiciously, his voice slightly tremulous. 'You said we wasn't cursed if we be careful.' He seemed brighter than the others and suddenly asked, 'How come he's your brother and he be black?'

'That's what I means, we got to lift the curse!' Tommo replied.

'I were born same as him,' Hawk explained, pointing to Tommo. 'Same's me brother, but I got cursed by the horrible African lobster and now I's black, see!'

'What you just seen here be black magic and folk's not s'posed to see black magic,' Tommo said. 'So me brother, what's turned black and is now the black magician what's forced to pass on the curse, will wave the lobster over your heads and then the curse be lifted. Now, if you please, a circle. Hold hands and make a circle. I'll tell you when to close your eyes!'

The boys formed into a circle holding hands with Hawk in the centre. Hawk lifted a lobster out of the bag and held it high above his head.

'Close your eyes tight now!' Tommo instructed. 'If you peeks you is cursed for life and you drowns all horrible out to sea but before that you turns black!'

Hawk started to recite:

Tommo waited for Hawk to place the lobster back into the bag. 'You can open your eyes, you be safe now,' Tommo instructed. 'Curse be lifted, but scarper quick and stay out of our way!' He then repeated Hawk's lines. 'Beware the black magician's curse, or things what's bad will soon be worse!'

'G'warn, clear off!' Hawk shouted, scowling fiercely. The urchins, terror etched on their dirty faces, turned and fled for their lives.

The two boys waited a few moments, most pleased with themselves. Then Hawk took up the wriggling bag of lobsters and they started to laugh. They continued laughing all the way up the hill to Mrs McKinney's fish shop.