T O 
HER ROYAL HIGHNESS 
THE | 
Princefs Dowager of WALES. 
MAD AM, 7 ‘att 
magaee NIM A'TED by the Attention 
ee Your Royal Highnefs conde- 
AS {cended to beftow, on many of 
® the Subftances defcribed in the 
“© enfuingPages, [have purfued my 
Enquiries concerning them, with an Ardour 
that only fuch an Influence could infpire. 
- The minuteft Works of Creation are not 
always the leaft wonderful : And though 
the Element, of which thefe are Natives, — 
tie: abba 20 Redes prohibits 
