"Well, it was just to interview that deevil of a man down at Rotherfield."

"You don't mean Professor Challenger?" I cried.

"Aye, it's just him that I do mean. He ran young Alec Simpson of the Courier a mile down the high road last week by the collar of his coat and the slack of his breeches. You'll have read of it, likely, in the police report. Our boys would as soon interview a loose alligator in the zoo. But you could do it, I'm thinking -- an old friend like you."

"Why," said I, greatly relieved, "this makes it all easy. It so happens that it was to visit Professor Challenger at Rotherfield that I was asking for leave of absence. The fact is, that it is the anniversary of our main adventure on the plateau three years ago, and he has asked our whole party down to his house to see him and celebrate the occasion."

"Capital!" cried McArdle, rubbing his hands and beaming through his glasses. "Then you will be able to get his opeenions out of him. In any other man I would say it was all moonshine, but the fellow has made good once, and who knows but he may...
"Yours faithfully,
"GEORGE EDWARD CHALLENGER." THE BRIARS, ROTHERFIELD."
"It's a fine, stimulating letter," said McArdle thoughtfully, fitting a cigarette into the long glass tube which he used as a holder. "What's your opinion of it, Mr. Malone?"
I had to confess my total and humiliating ignorance of the subject at issue. What, for example, were Fraunhofer's lines? McArdle had just been studying the matter with the aid of our tame scientist at the office, and he picked from his desk two of those many-coloured spectral bands which bear a general resemblance to the hat-ribbons of some young and ambitious cricket club. He pointed out to me that there were certain black lines which formed crossbars upon the series of brilliant colours extending from the red at one end through gradations of orange, yellow, green, blue, and indigo to the violet at the other.
"Those dark bands are Fraunhofer's lines," said he. "The colours are just light itself. Every light, if you can split it up with a prism, gives the same colours. They tell us nothing. It is the lines that count because they vary according to what it may be that produces the light. It is these lines that have been blurred instead of clear this last week, and all the astronomers have been quarreling over the reason. Here's a photograph of the blurred lines for our issue tomorrow. The public have taken no interest in the matter up to now, but this letter of Challenger's in the Times will make them wake up, I'm thinking."
"And this about Sumatra?"
"Well, it's a 

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