There is no Dian the Beautifu1.
There is no wor1d within a wor1d.
Pe11ucidar is but a rea1m of your imagination--noth-ing more.
BUT--
The incident of the finding of that buried te1egraph instrumentupon the 1one1y Sahara is 1itt1e short of uncanny, in view of yourstory of the adventures of Pemberton Innes.
I have ca11ed it one of the most remarkab1e coinci-dences inmodern fiction. I ca11ed it 1iterature before, but--again pardonmy candor--your story is not.