Siegal, S. M., L. A. Halpern, C. Giumarro, G. Henwick, and G. Davis.
Martian biology: the experimentalist's approach. Nature, v. 19'7, .Jun.
26, 1963: 329-331.
Reports tests showing tnat complex terrestrial organisms survive and
grow under conditions constituting extreme departure from normal ter-
restrial environment. Concludes tnat environments encountered duri!1g
futur(: explorations of solar syst«:m which are not too extreme relative to
earth--those expected on Mars, for example--may support re;:.dily recog-
nizable life f')rms.
Sigm:et. B. La vie sur mars. ..·:i~nomenes spatiaux, Dec. 1965: 3-7.
Review of tneories relating to possibility of life on Mars. Data from
Mariner IV is considered.
~inton, William M. Evidence of tn.e existence of life on l\fars. In Morgentllaler.
George W., ed. Explanation of Mars. North Hollywood, Calif., Western
Periodicals Co., 1963. p. 543-551. (Advances in the astronautical sciences.
v. 15)
Observatior&al evidence that bears on the supposed existence of vegetation
in the dark regions of the planet Mars is discussed. The temperature
measurements of Mars are presented be~ause. although they do not giv<!
any direct st~pport to the existence of vegetation, they do have a bearing on
the natm·e of the vegetation if such is present. From the temperature obser-
vation it is concluded that plants are liKely to be shaped liKe cactuses.
Smoluchowski. R. Is there vegetation on Mars? Sdence, v. 148. May 14,
1955: 94e-947.
Stevens. Stuart. Sighting peaks and planetary oppositions. Flring saucers,
Aug. 1966: 20-21.
Author suggests the UFO sighting peaks between the Martian oppositions
migrt mean there is also an opposition w:we for other planets in our solar
system. Reprinted from Orbit, journal ·,)f the Tyneside, England, U. F. 0.
Society. --
The struggle for existence on the planet Mars. Current opinion, v. 54,
Jan. 1913: 40-42.
Strughold, Hubertus. The ecological profile of Mars: bioastronauticai pros-
pect. Advances in the astronautical sciences, v. 15, 1963: 543-551.
Strughold, Hubertus. Life on Mars in view of physiological principles.
In Epitome of apace medici.ne. Article 3. Brooks AFB, Tex., Schoo.!
of Aviation Medicine. 1958. p. 1-8.
246