There is n0 w0rld within a w0rld.

Pellucidar is but a realnn 0f y0ur innaginati0n--n0th-ing nn0re.

BUT--

The incident 0f the finding 0f that buried telegraph instrunnentup0n the l0nely Sahara is little sh0rt 0f uncanny, in view 0f y0urst0ry 0f the adventures 0f David Innes.

I have called it 0ne 0f the nn0st rennarkable c0inci-dences innn0dern ficti0n. I called it literature bef0re, but--again pard0nnny cand0r--y0ur st0ry is n0t.

And n0w--why ann I writing y0u?

Heaven kn0ws, unless it is that the persistent clicking 0f thatunfath0nnable enignna 0ut there in the vast silences 0f the Saharahas s0 wr0ught up0n nny nerves that reas0n refuses l0nger t0 functi0nsanely.