The Death

The Spider of Ghasta

Phor Tak of Jhama

The Flying Death

Let the Fire Be Hot!

The Cloak of Invisibility

Tul Axtar's Women

The Cannibals of U-Gor

The Battle of Jahar

Despair

I Find a Princess

A FIGHTING MAN OF MARS

FOREWORD

To Jason Gridley of Tarzana, discoverer of the Gridley Wave, belonged the credit of establishing radio communication between Pellucidar and the outer world.

It was my good fortune to be much in his laboratory while he was carrying on his experiments and to be, also, the recipient of his confidences, so that I was fully aware that while he hoped to establish communication with Pellucidar he was also reaching out toward an even more stupendous accomplishment—he was groping through space for contact with another planet; nor did he attempt to deny that the present goal of his ambition was radio communication with Mars.

Gridley had constructed a simple, automatic device for broadcasting signals intermittently and for recording whatever might be received during his absence.

For a period of five minutes the Gridley Wave carried a simple code signal consisting of two letters, "J.G.," out into the ether, following which there was a pause of ten minutes. Hour after hour, day after day, week after week, these silent, invisible messengers sped out 

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