The Southwestern Historical Quarterly, Volume 65, July 1961 - April, 1962 Page: 144
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Southwestern Historical Quarterly
identity of any species found on any one of the plates. Since the
key is preceded by an explanatory note, it will here suffice to
comment that any intelligently persistent person willing to use
the explanatory figures and glossary (pp. 250-264) should be able
quickly to develop a working proficiency in its use. Two items
not contained in the glossary but used in the key should be
explained: the sign of infinity (00) to be read as "many, but
indefinite in number," and the English abbreviation ca. for the
Latin circa, to be read as "some," "approximately," or "about."
The key is followed (p. 86) by a map of Texas divided into
11 sections lettered A through K (The fact that the lettered sec-
tions in the key also involve the letters A through K is a mere
coincidence and implies no connection.), in each of which the
counties are numbered consecutively, beginning with 1 and con-
tinuing to completion. Page 87, facing the map, contains an
alphabetical list of Texas counties, each followed by a letter and
number indicating where it is located.
Descriptions follow in order the sequence of the plates; and,
while a given description applies only to the particular species
concerned, comparison of a fresh specimen of a species belonging
to the same genus will reveal such similarity as clearly to point
up its close relationship. The interested amateur student, by ac-
quiring a familiarity both with the illustrations and with the
descriptions, will be gratified by his early acquisition of ability
to recognize in the field, not only species illustrated, but also
close relatives. Similarly, by comparing the illustrations repre-
senting genera in any given family, together with frequent re-
reading of the descriptions, he will develop a "feel for family
characteristics." For example, Plates 43 (in part), 44 and 45 (in
part), illustrate species of 6 genera of the Figwort Family
(Scrophulariaceae). Turning to the figure 43 (in heavy type,
found on the margin of p. 198) that page is found to contain
descriptions of the three species of mints, illustrated on Plate 43,
followed on p. 199 with the first Figwort (Verbascum thapsus)
representing the last figure on Plate 43. Subsequent descriptions
all apply to members of this family, continuing to the Acanthus
Family (p. 204). Reading the several descriptions while referring
repeatedly to pertinent illustrations (and, of necessity at first,
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Texas State Historical Association. The Southwestern Historical Quarterly, Volume 65, July 1961 - April, 1962, periodical, 1962; Austin, Texas. (texashistory.unt.edu/ark:/67531/metapth101195/m1/168/: accessed May 24, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting Texas State Historical Association.