Volume 7 of Developments in Applied Spectroscopy is a collection of
forty-two papers selected from those that were presented at the 7th
National Meeting of the Society of Applied Spectroscopy, held (in place
of the 19th Mid-America Symposium on Spectroscopy) in Chicago, May
13-17, 1968. These papers, selected by the editors and reviewed by
persons knowledgeable in the field, are those of the symposium type and
not those pertaining to specific research topics that one would expect
to be submitted to a journal. It is the opinion of the committee that
this type of publication has an important place in the literature. The
relatively large number of papers would result in quite a sizable volume
if bound in one set of covers. For this reason, and to present the
material in areas of more specific iilterest, Volume 7 was divided into
two parts, Part A, Physical-Inorganic, and Part B, Physical-Organic
Developments. The 7th National Meeting was sponsored by the Chicago
Section as host in cooperation with the St. Louis, New England, Penn
York, Niagara-Frontier, Cincinnati, Ohio Valley, New York,
Baltimore-Washington, North Texas, Rocky Mountain, and Southeastern
Sections of the Society for Applied Spectroscopy and the Chicago Gas
Chromatography Group. The editors wish to express their appreciation to
the authors and to those who helped with the reviewing. The latter
include Dr. Elma Lanterman, Mr. John E. Forrette, Dr. Carl Moore, Dr. B.
Jaselskis, Mr. H. G. Zelinski, Mr.