Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 365
ryroily or turbid or im-pregnated with sewage.the effect of llio clieini-Cal being to preci|)itatethe impurities m solu-tion and suspension,while tliM chemical it-self is retaincil with theimpuritiis it i)ncipi-tates upon tlie top of the filtering material, so i ,,. : ...u !i;u r. that no trace of… … ./ i i j^^ li 1 1 1 ! ■ ■■■\t -.a I •* • SH r^imm FIRE APPLIANCES. 345 are filled with gravel, and are half imbedded in cement—up to the line of perforation—whichprevents any filth and disease-germs from settlnig below them, where they could not bereached and dislodged by the reverse current when…
Mechanical engineering
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