part IV. of the Earth. 1 7 5 



So likewife if we look into their Si- 

 tmtionj and place in the Earth ; fome- 

 times we find them in the perpendicu- 

 lar Intervalls : fbmetimes in the Bodies 

 of the Stratay being interfpersM* amoogft 

 the Matter whereof they confift: and 

 fbmetimes in both ; even the gemmeoos 

 Matter it felf, ( if I may fo fpeak ) 

 with this only difference, that thofe 

 Gemms, e. g. Topazes 5 Amethyfts^ 

 or Emeralds, which grow in the Fif- 

 fures, are ordinarily cryifallized, or 

 Ihot into angulated Figures : whereas 

 in the Strata they are found in rude 

 Lumps, and only like fb many yellow, 

 purple, and green Pebles. Not but 

 that even thefe that are thus lodged 



in the Strata are al- f Ue Cryjialllzed Bodies fomti 

 fb fbmetimes found ^^^^ perpendicular IntervaEs 



Cryitamzea \, ana are lodged in the ^tv^t^, even hy 

 in form of Cubes , one -who did not take them thence^ 



or ohferve them there. The for- 

 mer have always their Rooty {as the Jewellers call it) which is 

 only the Abruptnefs at that end of the Body whereby it adhered to 

 the Stone, or fides of the Intervalls, which Abruptmfs is caufed 

 hy its being broke off from it. Thofe which are found in the Strata 

 of Earth, Sand, or the like^ (having lain loofe therei?i) are intire^ 

 aad want that Mark of Adhejion : but th&fe which are inclofed in 

 Stone, Marble, or fuch other Jolid Matter, being .difficultly fepara^ 

 hlefram it<^ becaufe of its Adhefion to all fides of them^ have com" 

 monly fome of that Matter fill adhering to them, or at leaH Marks 

 of its Abruption from them, on all their fides ; wherein thefe differ 

 ff^em thsfe found in the perpendicular bitervalls^ they^ adhering'^ 

 m wi have noted ^ by only one end. Vid. Conf. 6. &c. infra. 



Rhombs^ 



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