suction pump on the Sazava River, and has been running without attention for fourteen days. No. 2, the dredge on the Upper Vltava, is working spendidly. No. 3 is in the testing laboratory of the Brno Technical Institute. No. 4 was damaged in transport. No. 5 is supplying the city of Hradec Králové with light. That is the ten-kilo pattern. The five-kilo pattern, No. 6, is running a mill at Slany. No. 7 has been installed to provide central heating for a block of buildings in the New Town. Mr. Machat, the proprietor of that block, is with us to-day. Would you mind, Mr. Machat?"
The elderly gentleman of that name awoke as from a dream. "I beg your pardon?"
"We were asking how your new central-heating system is working."
"What? What heating do you mean?"
"In your new block of buildings," said Bondy gently.
"What block of buildings?"
"In your new houses."
"In my houses? I haven't any houses."
"Come, come, come!" Mr. Rosenthal exclaimed. "You put them up only last year."
"I did?" said Machat in tones of surprise. "Oh, yes, you're right, so I did. But, you see, I have given those houses away, now. I gave them all away."
