516 



found from 1 to 1^, that of arterial blood being in all instances the 

 greater of the two compared. 



Since these results are at variance with the observations of Mr. 

 Coleman and Mr. Cooper on the temperature of the two sides of the 

 heart, Dr. Davy also tried the temperatures of these cavities, and 

 found a difference of about 1 ; the left ventricle being in all in- 

 stances warmer than the right. 



In the author's experiments on the temperature of different parts 

 of the body, the most remarkable was with respect to that of the 

 brain, which was found to be 1 lower than that of the rectum, al- 

 though this part was also at least 1 lower than the right side of the 

 heart, and the anterior part of the brain was even 1 or 2 lower 

 than the posterior. 



These results, Dr. Davy remarks, are in direct opposition to those 

 of Dr. Crawford in every respect ; since he found the capacity of 

 arterial blood greater than that of venous. He found no difference 

 of temperature between the two sides of the heart ; and, in fact, the 

 heat of all parts nearly the same. They are, on the contrary, per- 

 fectly consistent with Dr. Black's opinion, that animal heat is pro- 

 duced in the lungs ; and they are not inconsistent with the hypo- 

 thesis, that animal heat is dependent on the nervous system. 



In conclusion, the author adds some trials that he has made on the 

 temperature of infants just born, which he found to be 2 inferior 

 to that of adults ; but on the succeeding day, when respiration was 

 more perfectly performed, he found, on the contrary, an excess of 1, 

 agreeably to the fourteenth aphorism of Hippocrates. 



END OF THE FIRST VOLUME. 



PRINTED BY KICHA III) TAYLOR, 

 REII LION COURT, FLEET STREKT. 



