This study compared two self-instructional methods for
improving spelling in high school and college: a traditional-deductive presentation of spelling rules and lists of words to exemplify
each rule versus a programed-inductive presentation leading
the learner to observe the spelling behavior of words and to make
generalizations.
Both the traditional-deductive and...
An all-glass gas chromatograph was developed for the analysis
of corrosive metal halides. Included in the apparatus is a new liquid
sampling system designed for fast repetitive sampling of corrosive
liquids in an inert atmosphere. A flame photometer detector was developed
to permit the detection of corrosive solutes in the...