This chapter looks at the stained-glass windows of the crossing and the choir clerestory of the Princeton University Chapel. On the east side of the two transepts and in the choir above the organ cases are four windows which together illustrate aspects of the great themes in the Book of the Psalms. The windows are composed of numerous little scenes that are literal illustrations of verses from the Psalms, or are scenes from the life of Christ suggested by the verses. The four lancets in each window are to be read from left to right, and the three panels in each lancet from top to bottom. The north transept features Psalms 147, 148 and 150, while the south transept shows Psalm 107. In the north side of the choir are Psalms 22 and 23, and in the south side is Psalm 91.
Abstract Bioanalytical systems which include a gas chromatograph, a mass spectrometer, and a computer provide the most effective analytical methods for organic compounds other than macromolecules. The use of computer and microprocessor/computer instrumental combinations is increasing. Electron impact mass spectrometry is used for identification purposes; chemical ionization is best for quantitative work. Current studies indicate that negative ion mass spectrometry with non-filament sources will be useful in analyses for toxic agents (pesticides, fungicides, herbicides). Future analytical systems will have both positive and negative ion mass analyzer capabilities. Sample preparation methods depend on the type of analysis. Liquid chromatography is useful when the concentration is low. Open tubular glass capillary columns are coming into wider use, both in gas chromatography alone and in combined systems. The limits of detection are now in the subpicogram range, but the determining factor is usually the nature of the compounds under analysis and the extent of adsorption.
