Mijcellariea Curioja, 



4. That ceteris paribus the greateft heights of 

 the Mercury are found upon Eafterly and North- 

 Eafterly Winds. 



That in calm frofty Weather the Mercury 

 generally ftands high. 



6. That after very great Storms of Wind, when 

 the Quickfilver has been low, it generally riles 

 again very fait, 



7. That the more Northerly places have grea- 

 ter Alterations of the Barofcope^ than the more 

 Southerly. 



8. That within the Tropickj and near them, 

 thole Accounts I have had from others, and my 

 own Obfervation at St. Helena make very little or 

 no Variation of the height of the Mercury in all 

 Weathers. Now that Theory that can well ac- 

 count for all thefe appearances, will, in all pro- 

 bability, approach nearer the true caufe of the 

 Barometers Variations, than any thing hitherto 

 afforded ; and fuch an one I am bound to be- 

 lieve, is that which I here lay down with fab- 

 miffion to better Judgments. 



I conceive that the principal Caufe of the rife 

 and fall of the Mercury 9 is from the variable Winds, 

 which are found in the Temperate %ones 9 and 

 whole great unconftancy here in England is moft 

 notorious. I (hall not at prefent inquire into the 

 Caufe of its uncertainty, but the Matter of Fa& 

 being moft undoubted, the Legitimate Confe- 

 quences thereof muft be allow'd me, let it jprp- 

 ceed from what it will. 



A 



