I 380 Miftettanea Curiofa. 



der that the Phenomena we have afcribed to the 

 A£Uon of the Sun and Moon, are not always con- 

 ftant and uniform, and that every EffecT: does not 

 hereupon follow ; which, were there no other 

 Powers in Nature able to alter the influence of 

 this, might in a very regular and uniform man- 

 ner be expected from it. 



Thefe things being premifed, it will not be 

 difficult to {hew (as was propofed in the firft 

 Place) that thefe Changes in our Atmofphere at 

 High Water, New and Full Moon, the jEqui- 

 noxes, C^c.muft occafion lbme Alterations in all 

 Animal Bodies ; and that from the following 

 Confiderations. 



I. AH living Creatures require Air of a de- 

 termined Gravity to perform Refpiration eafily, 

 and with Advantage ; for it is by its weight that 

 this Fluid infmuates it felf into the Cavity of the 

 Bread: and Lungs. Now the Gravity, as we 

 have proved, being leffened at thefe Seafons, a 

 fmaller quantity only will infmuate it felf, and 

 this muft be of fmaller force to comminute the 

 Blood, and forward its Paffage into the left Ven- 

 tricle of the Heart, whence a flower Circulati- 

 on infues, and the Secretion of Spirits is dimi- 



niflied. ' r . . 



2,. This EfFecl: will be the more lure, m that 

 the Elafticity of the Atmofphere is likewife di- 

 minilhed. Animals want Air as heavy fo Ela- 

 ftic to a certain degree For as this 15 by its 

 weight forced into the Cavity of the Thorax in 

 Infpiration, fo the Mufcles of the Abdomen prefs 

 It into the Bronchi in Expiration, where the bend- 

 ing force being fomewhat taken off, and Springy 

 Bodies when unbended, exerting their Power e- 



