ERRATA
On page 216, Table II, read 63½° F, instead of 93½° F.
On page 218, Table IV, opposite 13.6 by volume, read 11.00 per cent. by weight, instead of 10.10.
On page 219, Table IV, opposite 17.03 by weight, read 20.9 by volume, instead of 20.7; and opposite 23.4 by volume, read .97251 specific gravity, instead of .96251.
On page 222 read Tienturier instead of Tenturier.