V. Fuchs, 463 ; Furstenau (1748), 465 ;

Kessler, 574; Lemery, 615; Oehme,
705 : Wallquist, 902. Apparatus and Manipulations.
II, Accum, 38 ; Berzelius, 41 ; Explana- tory Diet., 50 ; Hellwig, 60.