The graphical and Standard Methods for the determination of biochemical oxygen demand (BOD) were compared. Average means ± standard deviation of 228 ± 28 mg/L and 199 ± 25 mg/L for the Standard ...

IN company, I think, with other correspondents, I have misunderstood Mr. Larden's use of the words “analytical methods.” He alluded, it is true, to resolution and taking moments, but “analytical ...

THOUGH no one, I venture to think, will gainsay Mr. W. Larden's main contention that “analytical methods give a grasp of the principles of statics, while graphical methods disguise them,” yet it ...