and who with science and resources far in advance of
those of a United States, economically prostrate at the end of a long
series of wars with a Bolshevik Europe, in the year 2270 A.D., had swept
down from the skies in their great airships that rode "repeller rays" as
a ball rides the stream of a fountain, and with their terrible
"disintegrator rays" had destroyed more than four-fifths of the American
race, and driven the other fifth to cover in the vast forests which grew
up over the remains of the once mighty civilization of the United
States.

I explained the part I played in the fall of the year 2419, when the
rugged Americans, with science secretly developed to terrific efficiency
in their forest fastness, turned fiercely and assumed the aggressive
against a now effete Han population, which for generations had shut
itself up in the fifteen great Mongolian cities of America, having
abandoned cultivation of the soil and the operation of mines; for these
Hans produced all they needed in the way of food, clothing, shelter and
machinery through electrono-synthetic processes.

I explained how I was adopted into the Wyoming Gang, or clan,
descendants of the original populations of Wilkes-Barre, Scranton and
the Wyoming Valley in Pennsylvania; how quite by accident I stumbled
upon a method of destroying Han aircraft by shooting explosive rockets,
not directly at the heavily armored ships, but at the repeller ray
columns, which automatically drew the rockets upward where they exploded
in the generators of the aircraft; how the Wyomings threw the first
thrill of terror into the Airlords by bringing an entire squadron
crashing to earth; how a handful of us in a rocketship successfully
raided the Han city of Nu-Yok; and how by the application of military
principles I remembered from the First World War, I was able to lead the
Wyomings to victory over the Sinsings, a Hudson River tribe which had
formed a traitorous alliance with the hereditary enemies and oppressors
of the White Race in America.

* * * * *

By the Spring of 2420 A.D., a short six months after these events, the
positions of the Yellow and the White Races in America had been
reversed. The hunted were now the hunters. The Hans desperately were
increasing the defenses of their fifteen cities, around each of which
the American Gangs had drawn a widely deployed line of long-gunners;
while nervous air convoys, closely bunched behind