M'Alpixe & HuTCinxsox — On Vnrtrn and Canal Waters. 81 



Percentage Vohone Composition. 



Cartonic acid 4'888 



Oxygen, 30-806 



^"itrogen, 64-300 



Total, . . . 99-994 



Absolute Volume Comjoosition in Cich. Cents. 



Carbonic acid 1-934 



Oxygen, 12-187 



iN'itrogen, 2o-437 



Total, . . . 39-558 



1,000,000 litres of water contain 16,346 litres of mixed gases. 



Xo. II.— Tal-en IStli June, 1877. 



Volume nsed, 2*420 litres. 



Temperature of water, .... 20-25° C. 



Percentage Volume Composition. 



Carbonic acid, 4-465 



Oxygen, 30-897 



Nitrogen, 64-638 



Total, . . . 100-000 



Absolute Volume Composition in Cub. Cents. 



Carbonic acid, ......... 1-662 



Oxygen, 11-503 



Nitrogen, 24-065 



Total, . . . 37-230 



1,000,000 litres of water contain 15,384 litres of mixed gases. 



Waiees fbom Geaxd C'axal, 



Ko. I. — Taken at Haroldscross Bridge, 28t/i 2Iarch, 1877. 



Volume used, 2-420 litres^ 



Temperature of water. . . . . 8^ C. 



i:. 1. A. PROC, SEK. Xr., VOL. III. — '.CIENCE. G 



