C H ) 
Naphtha-, or Oleum Petroleum coagaUted or condenfed. 
I was told by a Chymift at MontpeSiery That Oleum Pe- 
troleum was the fame with Oyl of Jet or Gagates, and 
noc to be diftinguiiled by Colour, Tafte, Smell, Con* 
fiftcncy, Vertues, or any other Accident, as he had by 
Experience found, which renders Signior 5<?fC(?;^^'s Opi- 
nion probable, there being great Affinity between Jet and 
Amber. 
The Sixth Obfervaticn is about feme Alcalick and 
Med cinal Earths o{ italy^ particularly the Terra Firgi- 
ne aurea, known in Venice by its Salutary Effeds ; This 
is found in the State of Modena^ at a Place called San, 
Paolo , near the City of Reggio. It is of great Ufe in 
putrid and malignant Fevers, in Hypochondriacal Paffi- 
ons, above all it is wonderful in flopping Ha^morrhagies 
or Fluxes of Blood. 
The Seventh Obfervation gives us an Account of the 
Pow^der of Claramont (fo called from the Name of the 
Author, who hath written a little Book about it) or 
Terra de Balra^ becaufe it is found at a Place called Baira 
near Palermo. It is found alfb in other Places of Sicily ^ 
and is of a White Colour. It hath the ftme Vertues and 
Ufes with x.\i^ terra Vergtne aurea. He fpeaks alfo in 
this Obfervation of the Mineral Bezoar-Stone of GiraldU 
nus ; and of the Terra Melitenjjs or Petra S. Paul/, and 
gives us the Receipt of the Pulvis of Fondacare. More 
Experiments of the Vertues of Terra de Baira he gives in 
the Twelfth Obfervation. 
The Eighth Obfervation gives a farther Account of the 
_ Lapis Bezoar Mineralts fojftlis of Sicily, w^hich is a kind 
of Geodes : This reduced to Powder, and given in a con- 
venient Vthicle, is of great ufe in Maligrrant Fevers,Small 
Pox and Worms, \Sc, Of this Stone he hath treated large- 
ly in his Recherches Ohfervations NatureSes^ Printed 
at Amjlerdam. 
The 
