AND ANIMAL LIFE. 297 



respirations become thirty, and the pulse one 

 hundred per minute, A and B may send twelve 

 ounces in the place of eight ; but C must also cir- 

 culate sixteen instead of twelve in the same pe- 

 riod. 



It must appear manifest, that no accumulation 

 can ever happen in the way in which it has been 

 stated; and, moreover, it is equally clear, that 

 quickened circulation cannot alter the proportions 

 of arterial and venous blood. The paroxysm is 

 occasioned by the determination of blood to the 

 lungs, either from exercise or mental emotions. 

 When such a conformation exists, the delicacy 

 of the adjusted parts is liable, almost every mo- 

 ment, to be disturbed ; and when a paroxysm 

 does occur, the sanguiferous system recovers its 

 ordinary power, as stated in CCCXIX. 



CCCXXIV. We now enter upon the con- 

 sideration of the abdominal and thoracic affec- 

 tions, constituting the second class ; and shall 

 briefly show the influence they exert on the organs 

 of respiration. Among the diseases of the abdo- 

 men which tend to disorder respiration and its 

 dependent system circulation, are included tym- 

 panites, dropsy, enlarged liver, and tumours. 

 Its functional alterations are pregnancy and dis- 

 tention of the stomach. They all possess one com- 

 mon physical condition, viz. that they diminish the 

 capacity of the thorax. The extent of this change, 

 and the variety and character of its effects, will 



