Question

まぐろのおすし

解読(？)お願いします！
現代のネイティブの人たちには読みにくい英語で書かれているそうです
どこが今と違うのか教えてほしいです！🙇‍♂️

I looked with amazement at the absurd hieroglyphics upon the paper.
“Why, Holmes, it is a child's drawing,” I cried. omioH loolhed2
“Oh, that's your idea!”
線I 日I日T平 300
原8 日1月0平0SOS
“What else should it be?"
“That is what Mr. Hilton Cubitt, of Riding Thorpe Manor, Norfolk, is very
anxious to know. This little conundrum came by the first post, and he was to follow
by the next train. There's a ring at the bell, Watson. I should not be very much
surprised if this were he."
A heavy step was heard upon
the stairs, and an instant later there entered a tall,
ruddy, clean-shaven gentleman, whose clear eyes and florid cheeks told of a life led
far from the fogs of Baker Street. He seemed to bring a whiff of his strong, fresh,
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bracing, east-coast air with him as he entered.
内書 TS