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Monochlorimipraminein psychiatric patients resistant to other forms of treatment.' Institute for Neuropsychiatric Research.

Since Hippocrates and his Roman followers described the habitus apoplecticus and the habitus phthisicus, linking these antithetical physical types with certain temperamental peculiarities and with susceptibility to specific diseases, much research has been carried out in an attempt (1) to prove the existence of physical types and to discover their nature, and (2) to investigate the relation of these types to temperamental traits. This work has done much to clarify the issues at stake.

The present paper reports the results of certain experiments carried out in an attempt to obtain information on the increase in suggestibility which is often said to follow the administration of certain narcotics, in particular sodium amytal and nitrous oxide. The set-up of the experiment, and the results and conclusions reached, may be looked at from two different points of view, viz., (1) with regard to the light that is thrown on the action of the narcotics examined, and (2) with regard to the nature of suggestibility.

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