American journal of insanity . Fig. 22. Dementia. Aged 37 Fig. 24. Dementia. Aged 40 years. All analysis of the above traces shows two points ofdifference between them and the normal type: 1st, aloss of tricrotism with a marked tendency to the dicroticand monocrotic form, and 2d, a flat top in place of theacute allele found in health and febrile diseases. Thefirst of these changes we have already found to exist incases of fever when the temperature of the body iselevated, but among the insane there is no increase oftemperature, and we may therefore consider a dicroticpulse unaccompanie
American journal of insanity . Fig. 22. Dementia. Aged 37 Fig. 24. Dementia. Aged 40 years. All analysis of the above traces shows two points ofdifference between them and the normal type: 1st, aloss of tricrotism with a marked tendency to the dicroticand monocrotic form, and 2d, a flat top in place of theacute allele found in health and febrile diseases. Thefirst of these changes we have already found to exist incases of fever when the temperature of the body iselevated, but among the insane there is no increase oftemperature, and we may therefore consider a dicroticpulse unaccompanied by an abnormal rise of tempera-ture as one of the physical phenomena of insanity. 1870.] The Pulse of the Insane. 331 The second deviation from the normal standard isstill more characteristic of psychical disorder. Thispeculiar pulse curve with a flat summit has been de-scribed by Marey, and attributed by him to a patho-logical condition of the arterial walls, whereby theirelasticity was diminished and an impediment offered tothe free flow of blood. Now in th
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