Impasse or pseudo-impasse in the psychotherapy of an inhibited writer.

This paper describes the interactions of a patient and her therapist in the course of psychoanalytic psychotherapy, during which there occurred two significant impasse enactments. At first sight, each resembled a classical impasse. On further review of the case, the interactions took on a different texture that we have described as a pseudo-impasse in the course of the therapy.

The crystal chemistry of submandibular and parotid salivary gland stones.

The mineral composition of 38 human salivary gland stones was described qualitatively on the basis of X-ray diffraction and chemical analysis. In 32 submandibular stones, hydroxyapatite was the most frequently observed phase with a magnesium-substituted whitlockite co-phase (octacalcium phosphate was rarely present). In six parotid gland stones, apatite, magnesium substituted whitlockite and octacalcium phosphate were noted to be the major crystalline phases.