AND ANIMAL LIFE. 195 



tion of temperature in the cold stage of inter- 

 mittent fever. He says, " In the cold stage, 

 the heat is diminished, not on the surface only, 

 as some have imagined, but very probably over 

 the whole system. I have found it under the 

 tongue, and at the axilla, as low as 94, 93, 

 and 921, and on the extremities many degrees 

 lower."* 



CCXIX. No state of the system more satis- 

 factorily shews, that animal heat is not in the 

 direct ratio of the quantity of oxygen inhaled, but 

 in the inverse ratio of the quantity of blood exposed 

 to this principle, than intermittent fever. The san- 

 guineous fluid, from causes unknown to us, leaves 

 the surface and extremities, or rather does not flow 

 to them, and gradually engorges the internal vis- 

 cera; the lungs for some time are less congested 

 than the rest from the character of their office, but 

 they are sufficiently influenced from the first to be 

 incapable of oxygenating the blood as in health; 

 and as their incapability augments with the con- 

 tinuance of the cause, they very soon co-operate 

 with the depressing effects of the disease, to im- 

 pede, if not to destroy, the exercise of their own 

 and every other function of the body. In this way 

 we can account for the small and frequent pulse 

 and all the other symptoms enumerated. The blood 

 is deficient in its usual properties, and there- 



* Medical Reports, p. 153, 

 N 2 



