TEMPERATURE REGULATION "CENTERS" 
of the cat and rate of blood flow. If you show a mouse to the cat, 
you get an enormous increase in the hypothalamic blood flow by 
about 100 per cent. When the mouse is gone, then the blood flow 
drops. And another observation is, if the cat is not able to catch 
the mouse after some time, say if it were in a glass container, 
hypothalamic blood flow would drop, which is a sign of resignation. 
293 
