453 THE LAWS OF ORGANIC 



sea, I am inclined to believe that no small part 

 of the amendment arises from the repeated oc- 

 currence of that action. 



I have been led to this opinion, from consider- 

 ing the action of emetics on the circulation of 

 the blood ; and the following observations of Dr 

 REID, on the cases enumerated by Dr GIL- 

 CHRIST on the benefit of sea voyages to con- 

 sumptive patients, are corroborative of the prin- 

 ciples. " The patients were generally sea-sick, 

 and vomited much bile ; and in some the good 

 effects ceased when they grew familiar to the 

 ship's motion, and were no longer sea-sick. He 

 relates the case of a consumptive patient who 

 went to sea three times, the distance ten leagues ; 

 each time he was sick, vomited bile, and was 

 cured of his disease. In the last, where the pa- 

 tient was at sea only five or six hours, the effects 

 could not proceed from the air or exercise."* 



DLL The above observations, with respect to 

 the use of emetics, are supposed to apply to the 

 disease at its commencement only, or before the 

 parenchyma of the lungs is very much disorgan- 

 ised. At a later period I should not expect 

 equal success, and, in some instances, should not 

 be surprised if they occasioned injurious conse- 

 quences. 



DL1I. Changes in the properties of the blood. 

 That the sanguineous fluid is capable of being 

 * WILSON on Febrile Diseases, p. 544. 



