thod of putting the different fpe«? 

 cies of air to the teft. This kind-? 

 nefs of that gentleman deferves my 

 public thanks. 



Inaccuracies in the manner of 

 exprefftng myfelf will find fome 

 indulgence in a man born and edu- 

 cated in the Republic of the United 

 Provinces, and who was not early 

 in life acquainted with the Englifh 

 language. 



The August Sovereigns, whom 

 I have the honour to ferve, conde- 

 fcending graciouily to prolong my 

 leave of abfence, and allowing me 

 to fpend the prefent fummer in 

 this ifland, I thought it my duty to 

 apply the time granted me by their 

 goodnefs to an ufeful purpofe, and 

 to make all the advantage I could of 

 £hat peculiar degree of health which 



I have 



