it was a ghostly hand and arm

The object, whatever it was, hopped higher, rose slowly in the air, expanded. Lewisham's attention followed this slavishly. It was ghostly--unaccountable--marvellous. For the moment he forgot even Ethel. Higher and higher this pallid luminosity rose overhead, and then he saw that it was a ghostly hand and arm, rising, rising. Slowly, deliberately it crossed the table, seemed to touch Lagune, who shivered. It moved slowly round and touched Lewisham. He gritted his teeth. There was no mistaking the touch, firm and yet soft, of finger-tips. Almost simultaneously, Miss Heydinger cried out that something was smoothing her hair, and suddenly the musical box set off again with a reel. The faint oval of the tambourine rose, jangled, and Lewisham heard it pat Smithers in the face. It seemed to pass overhead. Immediately a table somewhere beyond the Medium began moving audibly on its castors. It seemed impossible that the Medium, sitting so still beside him, could be doing all these things--grotesquely unmeaning though they might be. After all.... The ghostly hand was hovering almost directly in front of Mr. Lewisham's eyes. It hung with a slight quivering. Ever and again its fingers flapped down and rose stiffly again. Noise! A loud noise it seemed. Something moving? What was it he had to do? Lewisham suddenly missed the Medium's little finger. He tried to recover it. He could not find it. He caught, held and lost an arm. There was an exclamation. A faint report. A curse close to him bitten in half by the quick effort to suppress it. Tzit! The little pinpoint of light flew up with a hiss. Lewisham, standing, saw a circle of blinking faces turned to the group of two this sizzling light revealed. Smithers was the chief figure of the group; he stood triumphant, one hand on the gas tap, the other gripping the Medium's wrist, and in the Medium's hand--the incriminatory tambourine. "How's this, Lewisham?" cried Smithers, with the shadows on his face jumping as the gas flared. "_Caught_!" said Lewisham loudly, rising in his place and avoiding Ethel's eyes. "What's this?" cried the Medium. "Cheating," panted Smithers.