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220 THE WONDERFUL CITY OF TOKIO.
Everything was arranged, and jin-riki-sha hired for the
About twelve o'clock they started, a very merry
round trip.
party, over hill and dale.
"What are those things in the ditches for?" asked
Johnnie.
"They are midzu-guruma (water-wheels)," said Oto.
"
If it were not for them, nothing could be grown on the hill-
sides."
In several places they saw artificial mounds covered with
ANCIENT BURIAL-PLACE OF AN EMPEROR.
ancient pine-trees, which stood out very conspicuously on the
level ground.
" Those hillocks are the resting-places of some of our
Mikados," said Mr. Nambo. r The one you see there con-
tains the body of Inkiyo, the twentieth sovereign, who reigned
at the beginning of the fifth century."
" I thought inkiyo was a term for a retired old gentleman,"
said Johnnie.
''
Fitz.
Well, those are retired old gentlemen," quickly answered
:r What else do you make of them?''
"I should think this part of Japan was once under water,"
remarked the Professor, frowning at his son.
* These gullies,