62 THE SEX-COMPLEX 



PHYSIOLOGICAL EFFECTS OF EXTRACTS OF THE PARA- 

 THYROIDS 



Effects of ex- Ott 1 states that of all glandular extracts those made 

 fr m the parathyroids are the most powerful in pro- 

 ducing diuresis, and that they act directly on the renal 

 epithelium. He also states that the arterial tension 

 is first raised and then lowered, with moderate doses, 

 but that large doses immediately reduce the blood- 

 pressure. According to the same investigator para- 

 thyroid extracts increase the force of uterine and 

 intestinal contractions. 



The investigations of Ott concerning the actions of 

 these extracts still await confirmation or contradiction, 

 so little has been the work conducted on this subject. 



1 Ott, I., 'The parathyroids considered from a physiological and 

 pathological standpoint '. Introductory Lecture, Philadelphia, 1900. 



