EXTENDED TO DENSE BODIES. 591 



Nolle Metals. 



III. Metals. — Already differentiated by tlieir molecular structure, and there- 

 fore not urgently in need of oxygen or other element : — 



Type X^^X^^. 



Silver G = ^^=^-^^||±^«=10-6. Exp. 10-5. 



Gold (.^Au A„^.o^9 85><12 + 20 ^^g.^^ ^^2. 



^AQ 162 ^ 



Platinum G = ^^^^ = ^^'^ ^i^"^ -^ = 20-66. Expt. 20-8. 

 JAQ, 162 ^ 



Ai ■ . .^ A1,,AL„ 13-75x12 + 20 ^_ t. x o r« „ ^„ 



Aluminium G= -,^!^^° = , ^^ = 2-7. Expt, 2-56 . . . 2-67. 



iAQ 162 ^ 



The construction of molecules might often be simplified by introducing the 

 doctrine of substitution supposed to take place in the act of reducing the metal 

 from its ore. Thus the element of ore in reference to the last is Al^Og. Suppose 

 that as fast as every atom of (or CI, or be what it may) is expelled, one of Al 

 takes its place, and we have as the metallic unit AI5. 



(Al,),,_1375x_60_ 

 ^-^Q"- 324 -^^*- 



The Three Eminent Acids. 



The glacial sulphuric acid shows its individualised character by its aptitude 

 for crystallizing. 



Glacial Sulphuric acid, ^^^SAO^^^" ^ ^^^23^x2^^ "^ ^'^^^- -^""P*- ^'^^^ ^* 15°C.Playfair. 



In the strongest oil of vitriol of commerce, MM. Gay Lussao, Marignac, and 

 BiNEAu found always ^V^h more than one atom of water. This indicates 



strongest Sulph. Acid. G= <^M5k±JLO=I?i^+^9= 1.843. E.pt. 1 842. 



The number of true hydrates, or symmetrically constructed molecules of oil 

 of vitriol SO3HO, or, as our notation gives it, SaqS (the least element of sulphur 

 being S=8, and the unitary equivalent a tetratom S^) is very great, the most 

 dilute being similar in structure to a particle of sea water or animal water, viz., 

 one atom if symmetrical as C^H^N^O^, or SaqS, or a couple of atoms if dissym- 



