294 THE LAWS OF ORGANIC 



of the lungs is accompanied by painful states of 

 the mind, and, without being directed by any 

 ideas of his own, he follows the impulse of his 

 feelings, and these will give rise to his pressing 

 the chest, or rolling upon his belly, as it is in 

 these regions that the pains have originated, and 

 in these in which they are continued. 



CCCXXL I am not aware in what manner 

 adhesion of the pericardium to the heart produces 

 palpitation ; that it does so, is not improbable. Ad- 

 hesion is so frequently connected with this organ, 

 without its presence being indicated by such an 

 affection, and when this irregular action has been 

 found co-existent with such a disorganization, 

 there has been likewise so much partial or general 

 disease, that the difficulties deter me from forming 

 even a conjecture on the subject. 



CCCXXII. Imperfect organization of the heart 

 is well illustrated by theCasrulean disease. BURNS, 

 in speaking of this affection, observes, that part 

 of the blood passes through the foramen ovale into 

 the left auricle ; and when the ductus arteriosus 

 is also pervious, another portion is transmitted 

 from the pulmonary artery to the aorta ; the 

 third and remaining quantity circulates through 

 the lungs in the usual way. The blood in the 

 two former divisions undergoes no change, but 

 mingles with the arterial in the situations in 

 which it terminates. This account is perfectly 

 correct. He then remarks, " Now, from this 



