The following typographic errors have been corrected:
- *p. 2, l. 16:* to be called ‘"exobiology." ——> to be called
"exobiology."
- *Table III.- Ultraviolet/Maximum:* 10⁸ erg/cm², 2537° Å ——> 10⁸
erg/cm², 2537 Å
- *p. 58, l. 14-15:* approximately 300 atm) ——> approximately 300 atm.)
- *p. 80, l. -2:* (600-1000 ft=c) ——> (600-1000 ft-c)
- *p. 87, l. 1:* 0.2-mM ——> 0.2 mM
- *p. 99, l. 1-2:* faintsess ——> faintness
- *p. 104, l. 2:* hiberation ——> hibernation
- *p. 116, l. 19:* processsing ——> processing
- *p. 121, l. 1:* _Hoffman, R. K.,_ ——> _Hoffman, R. K.;_
- *p. 124, l. -10:* _Rosenszweig_ ——> _Rosenzweig_
- *p. 128, l. 29:* AMRL Tech. Doc. Rept. ——> AMRL-Tech. Doc. Rept.
Variant spelling: Both forms _microorganism_ and _micro-organism_ have
been retained, as quoted from different sources or bibliographic
reference titles.
Tables: Where necessary, the widths of columns have been adjusted, and
some tables have been split to accommodate the width restrictions on
this text format. Split tables have had blank lines inserted in order to
maintain the alignment between the two parts should they be rejoined at
a future date. In the original text, Table VI was split over two pages
but has been rejoined in this version.
References: For ease of searching, references in the text, as well as
those in the list of references, have been enclosed in square brackets,
e.g. [ref.3].
UTF-8 characters: This version contains UTF-8 characters to represent
Greek letters, subscripts, superscripts and some punctuation. If these
characters do not appear correctly, you may need to select a different
font. In order for the table columns to line up correctly, this will
need to be a monospaced, or fixed-width, font.