Page:A Practical Treatise on Brewing (4th ed.).djvu/68

52 copper (see page 47.). It is certainly the best construction that can be adopted, as it not only saves time and labour, but also prevents the possibility of the worts getting tainted between the mash-tun and copper; which sometimes happens by lying too long in the under-back.

Where there are no refrigerators, the coolers should be spacious, and so constructed as that the worts may be run from the one into the other, which very much facilitates cooling; and where there are no artificial means of cooling, the coolers should be of such dimensions as to prevent the necessity of the worts being at an average more than two inches deep; or two and a half inches at the utmost. Blowers or fans are very useful, as they not only facilitate the cooling of the worts, by sweeping off the fob or froth, thus allowing a free radiation of caloric, but also by keeping the worts in constant motion, they assist in preventing their becoming tainted. Refrigerators are now very much used. We have lately, however, been inclined to think, that when improperly constructed, they sometimes occasion a little faintness in the worts by galvanic action, although the injury may perhaps as frequently arise from want of cleanliness. Our opinion, however, on this subject will be more