82 PROCEEDINGS OP THE AMERICAN ACADEMY 



24 MoOg . PaOg . 6 HoO + 47 aq Mo24p.207i(HO)i2 + 47 aq 



24 MoOg . PaOg . 6 H.O + 43 aq MojiP^O-ifHOJi^ + 43 aq 



24 MoOg . PoOg . 6 H^O + 24 aq MooiPoO^ilHO),, + 24 aq 



24 M0O3 • P2O5 . 2 KoO . 4 HoO Mo^iPaO^iKOlJHOjg 



24 MoOg . P0O5 . CcO . 5 H06 + 18 aq Moo4PAi(CcO.)(HO)io + 18 aq 



48 M0O3 . 2 P2O5 . 5 ('NRi).p . a,0 + 16 aq Mo48P40h8(NH40)io(HO)2 + 16 aq 



22 M0O3 . P.Og . 3 (NH4)20 . 3 H2O + 9 aq Moo2P2065(NH40)6(HO)6 + 9 aq 



22 M0O3 . P2O6 . 3 (NH4)20 . 3 HoO + 6 aq Mo22P2065(NH40)6(HO)6 + 6 aq 



22 M0O3 . P2O5 ■ 3 (NH4)20 Mo2oP2068(NH40)e 



22 M0O3 . P2O5 . 3 K2O . 3 H2O + 9 aq Mo22P2065( KO)6(HO)6 + 9 aq 



22 M0O3 . PjOg . 7 Ag20 + 14 aq Mo22Po064( AgO)i4 + 14 aq 



44 M0O3 . 2 P2O6 . 5 K2O . H2O + 21 aq Mo44P40i3g(KO)io(HO)2 + 21 aq 



60 M0O3 . 3 P2O5 . 8 (NH4)20 . H2O + 11 aq Mo6oP60i86(NH40)i6(HO)2 + 11 aq 



18 MoOg . P2O5 . NaaO . 5 H2O + ?n aq Moi8P2053(NaO)2(HO)io + m aq 



18 MoOg . P2O5 . 2 Na20 . 4 H2O + n aq Moj8P2053(NaO)4(HO)8 + n aq 

 16 MoOg . PaOg . 3 (NH4)20 . 3 H2O + 11 aq Moi6P2047(NH40)6(HO)6 + 11 aq 



5 M0O3 . P2O5 . 3 Na20 . 3 H2O + 11 aq Mo5P20i4(NaO)6(HO)6 + 11 aq 

 5 M0O3 . PoOg . 3 (Nk4)20 . 8 H2O + 4 aq Mo5P20i4(NH40)6(HO)6 + 4 aq 

 5 MoOg . P2O5 . 3 K2O . 3 H2O + 4 aq Mo5P20i4(KO)6(HO)6 + 4 aq 



5 M0O3 . P2O5 . 3 Ag20 . 3 H2O + 4 aq Mo5P20i4(AgO)6(HO)6 + 4 aq 



10 MoOg . 2 P2O5 . 5 K2O . HoO + 19 aq MoioP4034(KO)io(HO)2 + 19 aq 

 10 M0O3 . 2 P2O5 . 5 (^4)26 . HoO + 6 aq MoioP4084(NH40)io(Hb)2+ 6 aq 



20 M0O3 . AsiOg . 6 H2O + 21 aq Mo2oAso059(HO)i2 + 21 aq 



20 M0O3 . AS2O5 . 3 K2O Mo2oAs206o(KO)6 



20 MoOg . AS2O5 . 3 (NH4)20 Mo2oAs2062(NH40)6 



16 M0O3 • AS2O5 . 5 (NH4)20 . H2O + 8 aq Moi6As204-(NH40)io(HO)2 + 8 aq 



7 M0O3 . AS2O5 . 6 HoO + 8 aq Mo^AsoOooCHO)]^ + 8 aq 



7 MoOg . AS2O5 . (NH4)20 . 6 H2O Mo^AsoOoolNHiOjolHOJio 



7 M0O3 . AS2O5 . 3 BaO Mo7As2023( Ba02)8 



7 M0O3 . AS2O5 . 3 AgoO Mo^AsoOogfAgOJe 



6 M0O3 . AS2O5 . 6 H2O + 10 aq MOfiAsoOi-CHOJio + 10 aq 

 6 M0O3 . AS2O5 . 4 (NH4)oO + aq MogAsoOigfNH^OJa 



6 M0O3 . AS2O5 . (NH4)26 . 2 H2O + 2 aq Mo6Aso02o(NH40)2(HO)4 + 2 aq 

 6 M0O3 . AsoOg . Na20 . 5 HjO + 7 aq Mo6As20i7(NaO)o(HO)io + 7 aq 



For the convenience of comparison with the corresponding com- 

 pounds of tungsten, I have in writing these formulas as far as possible 

 assumed that all the phospho-molybdic and arsenio-molybdic acids con- 

 tain 12 atoms of hydroxyl, or, in the language appropriate to the old 

 notation, are six-basic. With the material before us, we are now pre- 

 pared to discuss the question of the basicity of the phospho-tungstates 



