( 3059 ) 
An Olfervatwn and Experiment concerning a Mineral Balfoni^ 
found in a Mine of Italy ^j/ Signior Marc- Antonio Caftagna ^ 
tnferted in the yth. Giornale Veneto de Letterati of June: 
2 2. 16713 and thence Englijh'd as follows 3 
IN the Territory of Bergamo , Signior M. Ant, Caflagna upon 
the confines of his Jurifdi<9:ion 5 hghted accideotly upon a 
not ordinary fweetBalfamick Scent 3 and following the fame 
fo as to find the Spirits thereof to ftrike his oofe more and 
more ftronglyj he firft caufed that Rocky Hill^ where he thca 
waSj to be digged in the place that appeared to him moft likely 
to be the Seat of it^ antd found, that the Stones thereof har- 
bour'd that fragrancy he fmeltj which was fo ftrong^ and 
by trials found fo friendly to the Vterus , that being applyed 
they did in a very flior t time cure it of any evil^ *tis lubjed: to. 
Encouraged hereby to profecute this work, he made his 
Workmen digg into the very bowels of the Hill 3 and after 
much labour and charge difcover d holes in fome ftoaes ^ as i£ 
excavated by art, of a greenifti colour , in which he fouod^' 
as diftilled by nature and kept in veflels , that liquor and bal- 
fomjWhich proved the fourceof that fcent, which was limpid 
and of a white colour^ like the white of an egg, but (ome what 
oleaginous, floating upon all forts of liquors like oyl. BefideSj 
he met in the fame Cavities fome fmall grains concreted of 
the faid liquor, refembling that which they call white Amber • 
which, being Chymically diftilled , had the fame odour with 
the Balfom. This raifeth the curiofity of many* to know 
what rich Ore may be lodged amongft or under thofs 
ftones. 
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