r. EQUIVALENT OF SILICON.

This was found by PELOUZE (Comptes Rendus xx., page 1047) as 88.94 × 2=177.88. I consider the method pursued by Pelouze less accurate than that pursued by Berzelius, and I have therefore retained the number of Berzelius, viz. in the ratio of 3 2, since silicic acid is Si O,.

s. EQUIVALENT OF STRONTIUM.

100 Sr Cl yielded 181.25 of Ag Cl (STROMEYER).

181.25 100: 1792.21 : x

PELOUZE found 548.02 (Comptes Rendus xx., page 1047). His statements, however, leave some doubt regarding the purity of the salt used.