This section is from the book "A Treatise On Beverages or The Complete Practical Bottler", by Charles Herman Sulz. Also available from Amazon: A Treatise On Beverages.
Fig. 222. - German Acid and Salt Solution Feeder attached to Apparatus.
Fig. 223 is an adjustable salt solution feeder, as frequently used in conjunction with German apparatus.
Fig. 223. - Adjustable Salt Solution Feeder.