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2-5.

The Groth Institute

organization:

`` The Groth Institute '', which was established in 1958, is a group activity affiliated with the Physics Department of The Pennsylvania State University, University Park, Pa..

Ray Pepinsky is the Director.

The Institute derives its name from Paul Von Groth's Chemische Krystallographie, a five-volume work which appeared between 1906 and 1919.

The resident staff is large and consists of professional assistants, graduate students, abstractors, librarian, technical editor, machine operators, secretarial help, and others.

There are also corresponding members and outside advisory groups.

The Air Force Office of Scientific Research has provided financial assistance in the early stages of the Institute's program.

Substances:

All crystalline substances and other solid-state materials.

Properties:

The aim is to collect a very broad range of physical, chemical, morphological, and structural data for crystals on an encyclopedic scale and to seek all possible useful and revealing correlations of properties with internal structure.

Sources of data:

The first stage of operation has centered on the literature imaging of critical or summarizing tabulations such as the Barker Index.

Coverage of primary literature will follow.

Unpublished data will be available to the Groth institute from cooperating groups and individuals.

Criticality:

Critical evaluation of all data compiled is not a primary aim of this project.

However, the proposed correlation of the many interrelated properties of crystals will reveal discrepancies in the recorded data and suggest areas for reinvestigation.

In addition, the availability of computers will permit recalculation and refinement of much structural information.

Use of nomenclature, symbols, units, physical constants:

For punched-card or tape storage of information all literature values must be conformed to a common language.

In this way a degree of unification of nomenclature, symbols, and units will be realized.