Problem of extraterre!'trial life is discussed in the lignt of curred.
Strughold, Hubertus. Synopsis of Martian life theories. In OrC:way,
Frederick I. III. ed. Advanc-es in space science and technoiogy. v. 9.
New York and London. Academic Press, 19fi7. p. 105-122.
i.~onsidering all the physJcochemical and biological factors and their
interrelations. and particularly the adaptability of life to adverse con-
ditions and the effect of living matter upon the soil, it is concluded that
the occurrence of life on Mars is more in the i·ealm of probability than
of possibility. 'fhe dark areas on the Martian surface might indeed repre-
sent an ecological system, or ecosystem, but of a level far below that
found on earth. in terms of carbon biology and geocentric analogy, the
conclusion is justified that the dark surface area can be of a biospheric
nature.
Sytinskafo.. N. N. Est' Ii zhizn' na drugikh planetakh [Is there life on othe~
planets ·.J !V1oscow. Gosudarstvennoe izdatel 'stvo k'1l 'turnoprosvetitel'noi
literatury. 1952. 64 p.
A lectur0 dcali11g- primarily with life on Mars and other planets. The
author concludes that it is quite probable that vegetation exists on other
planets. citing tne Russian astrunomer. G. S. Tiknov, wao 11as indicated
that tne color of polar caps on Mars is greenish, not white, an evidence of
vegetation, and t1. it the melting ice and snow produce the water necessary
to sustai 11 life.
Thomas, D1)rotny. Life on Mars accordi.1g to tne great mystics. Los
Angeles, New Age Publishing Co. , 19; 8. 9 p.
247