Brewers' wort remains unchanged for years, milk keeps permanently sweet, and these and other complex liquids remain unaltered when freely exposed to air from which all these minute organisms are removed.
The brewers and distillers, such as M ` Ewan, Usher and Ure, have been amongst the most generous benefactors of the city.
It is used by brewers as a substitute for hops.
Other institutions are Concordia College (1881, Lutheran), a state normal school (1880), the Wisconsin College of physicians and surgeons (1893), the national German-American teachers' seminary (normal), Milwaukee academy (1864), Milwaukee University school, Milwaukee school of engineering (1904), Milwaukee Turnverein school of physical culture, one of the largest schools of the sort in the United States, St John's Catholic institute, Our Lady of Mercy academy (Roman Catholic), Wisconsin academy of music, the Wisconsin school of art (art students' league), a Catholic normal school, St Rose's manual training school, the industrial chemical institute (the only technical school for brewers in the United States) and several business and commercial schools.
It has few distinctive species, but within its borders the southern mole and cotton-tail rabbit of the South meet the northern star-nosed and Brewers moles and the varying hare of the North, and the southern bobwhite, Baltimore oriole, bluebird, catbird, chewink, thrasher and wood thrush are neighbors of the bobolink, solitary vireo and the hermit and Wilson s thrushes.